Best Serta King Mattresses: 14 Spec-Based Picks
Evaluate 14 Serta king mattresses using published thickness, support core, and firmness specifications to choose the right mattress profile for your sleep position and frame.
6 min read
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Finding the best serta king mattresses requires evaluating dimensions, support cores, and firmness ratings. This buying guide compares 14 models strictly using the specifications published on the listings.
The Serta Five Star Tranquility 10" King earns the top spot because its 10-inch profile and medium firmness deliver targeted 3-zone lumbar alignment for combination sleepers. This guide helps you decide which mattress build, overall thickness, and internal support design best match your sleeping position and bed setup.
Core construction determines firmness and feel
Pay close attention to mattress type and thickness. The Serta SleepTrue provides an all-foam, firm build at 12 inches. In contrast, the Serta Perfect Sleeper Port Ludlow reaches 15 inches with a plush pillow top. Check your bed frame height and sheet depth to ensure proper fit.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Serta Five Star Tranquility 10" King Best overall | combination sleepers seeking targeted lumbar alignment | |
| 2 | Serta Sleeptrue Firm 12" King Best budget | Firm all-foam support on a budget | |
| 3 | Serta Perfect Sleeper Enhanced 12" Firm King Mattress Best premium | Back and stomach sleepers wanting firm support | |
| 4 | Serta Clarks Hill Elite 2.0 Medium King Mattress Also great | Combination sleepers wanting zoned lower-back support | |
| 5 | Serta Perfect Sleeper Port Angeles 13" Medium King Also great | combination sleepers wanting zoned innerspring support | |
| 6 | Serta Perfect Sleeper Port Angeles 13" Firm King Also great | Back and stomach sleepers needing zoned firm support | |
| 7 | Serta Perfect Sleeper Port Ludlow 15" Plush King Also great | Side sleepers wanting a thick plush pillow top | |
| 8 | Serta Perfect Sleeper Port Ludlow 14" Extra Firm King Best 14-inch | stomach and back sleepers needing rigid support | |
| 9 | Serta Perfect Sleeper X Extra Firm King Hybrid Also great | stomach sleepers wanting extra-firm hybrid support | |
| 10 | Serta iSeries NXG 1500 12-Inch Hybrid King Also great | back and stomach sleepers wanting firm support | |
| 11 | Serta Perfect Sleeper Port Townsend 12.5" Plush King Also great | Side sleepers seeking zoned plush cushioning | |
| 12 | Serta iComfortPro Chelsea 12" Medium King Mattress Also great | Combination sleepers wanting responsive all-foam latex | |
| 13 | Serta Perfect Sleeper Pro Valais 15" King Mattress Also great | side sleepers wanting plush zoned latex support | |
| 14 | Serta Perfect Sleeper X Kendall 13" Plush King Hybrid Also great | side sleepers seeking zoned hybrid contouring |
The best fit for you
- You want a low-profile medium king mattress. – Serta Five Star Tranquility 10" King – Its 10-inch profile and medium firmness deliver pressure relief with targeted lumbar support.
- You prefer a firm all-foam king mattress. – Serta Sleeptrue Firm 12" King – This model features a 12-inch memory foam build with a firm support rating.
- You want a tall plush pillow top mattress. – Serta Perfect Sleeper Port Ludlow 15" Plush King – A 15-inch height and plush pillow-top design offer cushioned side-sleeper pressure relief.
- You require an extra-firm king mattress profile. – Serta Perfect Sleeper Port Ludlow 14" Extra Firm King – Its 14-inch height and extra-firm rating deliver rigid spinal alignment with minimal sinkage.
Serta Five Star Tranquility 10" King
Best for: combination sleepers seeking targeted lumbar alignment
- Size
- King
- Mattress Size
- King
- Thickness
- 10"
- Firmness
- Medium-Firm
- Certifications
- CertiPUR-US
- Use
- Pressure Relief
This Serta king mattress delivers a balanced medium feel across a standard 76-by-79.5-inch footprint. At 10 inches thick, it combines internal support coils with a 3-zone lumbar foam layer to align your lower back and hips. PillowSoft foam cushioning targets your pressure points while maintaining steady airflow, making it a reliable fit if you are a combination sleeper.
- 3-Zone Support Foam targets lumbar and hip alignment
- Internal coils isolate motion across the king surface
- CertiPUR-US certified foams with a 10-year limited warranty
- PillowSoft Aire and PillowSoft foams cushion pressure points
- 10-inch profile is thinner than the 12- to 15-inch builds on the list
- Does not feature a dedicated pillow-top layer
- You are a combination sleeper who needs balanced medium support.
- You prefer a lower 10-inch mattress height for standard fitted sheets.
- You want a deep pillow top or a high-profile mattress over 12 inches.
- You need an extra-firm or plush surface rather than a medium feel.
Verdict: Serta Five Star Tranquility 10-Inch King Mattress provides targeted 3-zone lumbar support and motion isolation for combination sleepers wanting a lower-profile hybrid setup.
Serta Sleeptrue Firm 12" King
Best for: Firm all-foam support on a budget
- Size
- King
- Mattress Size
- King
- Thickness
- 12"
- Firmness
- Firm
- Mattress Type
- Memory Foam
- Cooling Tech
- Cool Twist Gel Memory Foam
This Serta SleepTrue is a 12-inch King memory foam mattress built with an all-foam profile. It combines a dense Serta Foam Core, three targeted support zones, and a layer of Cool Twist gel memory foam under a breathable cover. If you prefer a firm, structured surface without innerspring coils, this mattress supports your lower back and edges.
- Cool Twist gel memory foam designed for heat dissipation
- Three support zones structured for lower-back alignment
- 12-inch profile with an edge-to-edge dense foam core
- CertiPUR-US certified foams and 10-year limited warranty
- All-foam construction lacks the pushback and airflow of coil hybrids
- Features 3 support zones instead of the 5 zones on higher-tier models
- Requires up to 72 hours to fully expand and two weeks to air out
- You want an all-foam firm King mattress with dedicated lumbar zones.
- You prefer the contouring of gel memory foam over traditional springs.
- You need a CertiPUR-US certified bed that ships compressed in a box.
- You prefer the active bounce and edge support of pocketed coils.
- You want a plush or medium firmness profile.
- You need a mattress ready for immediate use without an expansion window.
Verdict: Serta SleepTrue 12" Firm King Memory Foam Mattress delivers firm, all-foam lumbar support and gel-infused cooling without the mechanical complexity of innerspring coils.
Serta Perfect Sleeper Enhanced 12" Firm King Mattress
Best for: Back and stomach sleepers wanting firm support
- Size
- King
- Mattress Size
- King
- Thickness
- 12 inches
- Firmness
- Firm
- Coil Type
- 825-coil system
- Cooling Tech
- Cool Twist Gel Memory Foam
This 12-inch King innerspring mattress pairs an 825-coil support core with dedicated lumbar reinforcement. You get a firm surface layered with a one-inch PillowSoft Aire foam top, Cool Twist gel memory foam, and a targeted center gel band for lower back support. It suits back and stomach sleepers who want rigid alignment and motion isolation without deep sinkage.
- 825-coil core contours to the body and isolates movement
- Targeted gel memory foam band provides extra lumbar support
- Cool Twist gel memory foam promotes airflow and heat dissipation
- CertiPUR-US certified foams backed by a 10-year limited warranty
- 12-inch height provides less padding depth than 13.5- to 15-inch models on this list
- Firm surface provides minimal contouring cushion for strict side sleepers
- You sleep on your back or stomach and need firm spinal alignment.
- You share a bed and want an 825-coil core to minimize partner disturbance.
- You want extra lower-back support from a targeted center gel band.
- You sleep on your side and need deep contouring at the hips and shoulders.
- You prefer a plush, high-profile pillow top mattress over 13 inches tall.
Verdict: Serta Perfect Sleeper Enhanced 12" Firm King Mattress delivers structured spinal alignment with its 825-coil core and reinforced center gel band. It is built specifically for back and stomach sleepers who prioritize firm support over thick surface padding.
Serta Clarks Hill Elite 2.0 Medium King Mattress
Best for: Combination sleepers wanting zoned lower-back support
- Size
- King
- Mattress Size
- King
- Thickness
- 13.5"
- Firmness
- Medium
- Coil Type
- 800-density individually-wrapped coils
- Certifications
- CertiPUR-US
This 13.5-inch King mattress pairs an 800-density individually-wrapped coil system with three dedicated support zones for your lower back. Its medium firmness supports back, stomach, and combination sleeping styles while cushioning foam layers target pressure points. Wrapped in a breathable cover, it reduces motion transfer across the 76-by-79.5-inch surface if you share your bed.
- 800-density individually wrapped coils isolate partner motion
- 3-zone design provides dedicated lower back support
- CertiPUR-US certified cushioning foam layers
- 10-year limited warranty coverage
- Offers 3 support zones rather than the 5 zones found on higher-tier models
- Heavy 105-pound weight makes moving and rotation difficult
- Cooling features are limited to a breathable cover
- You sleep on your back, stomach, or switch positions through the night.
- You need focused lumbar support paired with motion-isolating pocket coils.
- You want a 13.5-inch profile with CertiPUR-US certified foams.
- You prefer 5-zone ergonomic body contouring over a 3-zone system.
- You need a lightweight mattress that is easy to reposition alone.
- You want specialized cooling gel layers rather than a standard breathable cover.
Verdict: Serta Clarks Hill Elite 2.0 13.5" Medium King provides back and combination sleepers with structured lumbar support via an 800-coil zoned core. It suits partners who need dependable motion isolation alongside balanced medium cushioning.
Serta Perfect Sleeper Port Angeles 13" Medium King
Best for: combination sleepers wanting zoned innerspring support
- Size
- King
- Mattress Size
- King
- Thickness
- 13"
- Firmness
- Medium
- Coil Type
- 860-density 4-in-1 coils
- Cooling Tech
- Cooling Tech
This 13-inch King innerspring mattress pairs 860-density coils with zoned memory foam for balanced support. Its 5-zone system aligns your spine, while the rippled PillowSoft Aire foam layer aids airflow. Measuring 76 by 79.5 inches, it offers a medium firmness designed for back, stomach, and combination sleeping. It also works directly with adjustable bases.
- 860-density 4-in-1 coil system distributes body weight
- Five-zone support structure targets spinal alignment
- PillowSoft Aire foam rippled design promotes airflow
- Compatible with adjustable bed bases
- 13-inch profile is lower than 14-inch and 15-inch line options
- Weighs 91.6 pounds, requiring effort to move or rotate
- You switch between back, stomach, and side sleeping positions
- You use an adjustable bed frame
- You want zoned spinal support paired with innerspring pushback
- You prefer an extra-firm or rigid sleeping surface
- You want a deep pillow-top build over 13 inches tall
Verdict: Serta Perfect Sleeper Port Angeles 13" Medium King delivers balanced five-zone contouring for multi-position sleepers who need adjustable base compatibility. Its hybrid construction provides reliable pocketed coil support without shifting into overly firm or plush extremes.
Serta Perfect Sleeper Port Angeles 13" Firm King
Best for: Back and stomach sleepers needing zoned firm support
- Size
- King
- Mattress Size
- King
- Thickness
- 13"
- Firmness
- Firm
- Certifications
- CertiPUR-US
- Mattress Type
- Innerspring
This 13-inch innerspring mattress pairs a firm surface with Serta's 5-zone support structure. Beneath the quilted PillowSoft Aire foam, an 860-density coil core targets spinal alignment across your body. It fits stomach sleepers, back sleepers, and heavier individuals who need structured resistance. The build works on standard frames or adjustable bases and includes CertiPUR-US certified foam.
- 860-density 4-in-1 coil core distributes weight evenly
- 5-zone response design targets full-body spinal alignment
- PillowSoft Aire foam promotes internal airflow
- Works directly on adjustable bases
- Weighs 101 pounds, making solo moving and repositioning difficult
- Firm build lacks deep contouring for strict side sleepers
- You sleep on your back or stomach and need rigid spinal alignment.
- You want high-density zoned coils for added support under heavier body weight.
- You plan to pair your King mattress with an adjustable base.
- You sleep strictly on your side and need soft shoulder cushioning.
- You need a lighter mattress that is easy to rotate alone.
Verdict: Serta Perfect Sleeper Port Angeles 13" Firm King delivers structured spinal alignment and zoned reinforcement for back and stomach sleepers using flat or adjustable bases.
Serta Perfect Sleeper Port Ludlow 15" Plush King
Best for: Side sleepers wanting a thick plush pillow top
- Size
- King
- Mattress Size
- King
- Thickness
- 15"
- Firmness
- Plush
- Top Style
- Pillow Top
- Coil Type
- 4-in-1 coils
This King mattress pairs a 15-inch profile with a plush pillow top and an 860-density 4-in-1 coil core. Its 5-zone construction combines contouring memory foam with zoned coils for spinal alignment across your shoulders, hips, and lower back. It suits side sleepers who need deep surface pressure relief on an adjustable-base compatible build.
- 860-density 4-in-1 coil system for targeted weight distribution
- 5-zone design balances pocketed coils with contouring foam
- QuiltLoft memory foam pillow top relieves joint pressure
- Compatible with adjustable bases
- 15-inch profile requires deep-pocket fitted sheets
- 126-pound weight makes moving or rotating difficult
- Plush surface lacks the rigidity preferred by stomach sleepers
- You sleep on your side and need contouring at the hips and shoulders.
- You use an adjustable base and want a tall pillow top mattress.
- You prefer a soft, pressure-relieving sleep surface.
- You sleep primarily on your stomach and need firm spinal support.
- You want a lower-profile mattress under 14 inches.
- You need a lightweight mattress that is easy to move alone.
Verdict: Serta Perfect Sleeper Port Ludlow 15" Plush King delivers five-zone support and deep pressure relief for side sleepers who prefer a tall, soft mattress.
Serta Perfect Sleeper Port Ludlow 14" Extra Firm King
Best for: stomach and back sleepers needing rigid support
- Size
- King
- Mattress Size
- King
- Thickness
- 14"
- Firmness
- Extra Firm
- Coil Type
- 4-in-1 coils
- Cooling Tech
- Cooling Tech
This 14-inch King mattress pairs an extra-firm feel with Serta's 5-zone coil system and QuiltLoft memory foam. Inside, 860-density 4-in-1 coils distribute your body weight across a 76-by-79.5-inch footprint. Built-in cooling technology helps manage heat, while CertiPUR-US certified foams deliver targeted spinal alignment. It directly suits back and stomach sleepers who require rigid body support.
- 860-density 4-in-1 coils provide 5-zone spinal support
- Extra firm comfort profile engineered for back and stomach sleeping
- QuiltLoft memory foam layer adds surface contouring
- Compatible with adjustable bases
- Heavy build at 120 pounds makes rotating difficult
- Extra firm profile lacks pressure relief for dedicated side sleepers
- You sleep on your back or stomach and need maximum surface firmness.
- You want a 14-inch King mattress designed to operate on an adjustable base.
- You need 5-zone targeted support to maintain spinal alignment.
- You sleep on your side and need a plush, sinking feel.
- You cannot maneuver a 120-pound mattress setup.
Verdict: Serta Perfect Sleeper Port Ludlow 14-Inch King provides dedicated spinal alignment and weight distribution for stomach and back sleepers who demand an extra-firm, 14-inch support profile.
Serta Perfect Sleeper X Extra Firm King Hybrid
Best for: stomach sleepers wanting extra-firm hybrid support
- Size
- King
- Mattress Size
- King
- Thickness
- 13.75"
- Firmness
- Extra Firm
- Mattress Type
- Hybrid
- Top Style
- Quilted Top
This hybrid mattress pairs a 13.75-inch profile with an extra-firm comfort level. Inside, a 5-zone coil system targets spinal alignment alongside graphite-infused memory foam for heat distribution. Because it ships fully assembled at 124 pounds rather than rolled in a box, you get immediate structural firmness. It suits back and stomach sleepers who require rigid lumbar support.
- Five-zone coil design isolates support across body zones
- Graphite-infused memory foam pulls heat away from the sleep surface
- Ships fully assembled without foam compression
- CertiPUR-US certified foam layers
- Heavy 124-pound build requires multiple people to maneuver
- Full-size shipping dimensions complicate navigation through tight entryways
- Extra-firm surface provides minimal contouring for side sleepers
- You sleep primarily on your stomach or back and need rigid spinal alignment
- You prefer an uncompressed, flat-shipped mattress over a boxed bed
- You want zoned pocket coils combined with graphite cooling foam
- You sleep on your side and require deep cushioning for pressure points
- You need a lightweight or rolled mattress for solo setup
Verdict: Serta Perfect Sleeper X Excelled Extra Firm King delivers rigid zoned hybrid support and uncompressed construction for back and stomach sleepers requiring minimal surface sinkage.
Serta iSeries NXG 1500 12-Inch Hybrid King
Best for: back and stomach sleepers wanting firm support
- Size
- King
- Mattress Size
- King
- Thickness
- 12"
- Firmness
- Firm
- Mattress Type
- Hybrid
- Coil Type
- 5-zone coil system
This 12-inch hybrid mattress combines a 5-zone coil system with carbon fiber memory foam and a CoolFeel cover. Its firm profile suits you if you sleep on your back or stomach and need extra lower back lift. It ships uncompressed at 150 pounds, works on adjustable bases, and includes a 10-year warranty.
- 5-zone coil core with BestEdge perimeter reinforcement
- CoolFeel cover and Carbon Fiber memory foam for heat dissipation
- CertiPUR-US certified high-density foam layers
- Compatible with adjustable bases
- Weighs 150 pounds and arrives flat rather than rolled in a box
- 12-inch profile provides less padding depth than 13.5- to 15-inch alternatives
- You sleep on your back or stomach and require firm spinal alignment.
- You need zoned coil support paired with cooling memory foam.
- You plan to use an adjustable base foundation.
- You prefer a plush or pillow-top surface with deeper body sinkage.
- You need a compressed, boxed mattress for easier transport through narrow spaces.
Verdict: Serta iSeries NXG 1500 12" Firm King Hybrid delivers dedicated lumbar reinforcement and surface heat dispersal for back and stomach sleepers who prefer flat, rigid support. It avoids compressed packaging while pairing high-density foam with a five-zone coil foundation.
Serta Perfect Sleeper Port Townsend 12.5" Plush King
Best for: Side sleepers seeking zoned plush cushioning
- Size
- King
- Mattress Size
- King
- Thickness
- 12.5"
- Firmness
- Plush
- Coil Type
- 860-density 4-in-1 coils
- Cooling Tech
- Cooling Tech
This 12.5-inch king mattress pairs an 860-density 4-in-1 coil system with zoned memory foam. It features a plush firmness level targeted at shoulder and hip pressure relief, plus rippled PillowSoft Aire foam for airflow. It works with adjustable bases and includes a 100-night trial alongside a 10-year limited warranty, making it a dedicated choice for side sleepers.
- 5 Zone Response Design targets spinal alignment at the shoulders, hips, and lower back
- 860-density 4-in-1 coils provide zoned weight distribution
- PillowSoft Aire foam features a rippled design to promote airflow
- Compatible with adjustable bed bases
- Includes a 100-night trial and a 10-year limited warranty
- Plush profile does not provide the firmer surface preferred by stomach sleepers
- 12.5-inch profile is lower than the 13-inch to 15-inch builds on this list
- You sleep on your side and require deep contouring around your shoulders and hips
- You plan to use an adjustable king bed base
- You want a five-zone coil setup that balances alignment and airflow
- You require a firm or extra-firm mattress to support stomach sleeping
- You want a thick mattress profile of 13 inches or higher
Verdict: Serta Perfect Sleeper Port Townsend 12.5" Plush King delivers five-zone support and cushioning foam tailored specifically for side sleepers seeking pressure relief. Its 860-density coil build and adjustable base compatibility suit sleepers who prioritize targeted spinal alignment over extra-thick profiles.
Serta iComfortPro Chelsea 12" Medium King Mattress
Best for: Combination sleepers wanting responsive all-foam latex
- Size
- King
- Mattress Size
- King
- Thickness
- 12"
- Firmness
- Medium
- Mattress Type
- Latex Foam
- Cooling Tech
- CoolFeel Pro, graphite-infused latex
This 12-inch King mattress uses latex foam rather than standard innerspring coils. It features two inches of graphite-infused natural latex over a 5 ZoneResponse system to align your spine across key pressure zones. A medium firmness rating supports combination, back, side, and stomach sleepers, while the CoolFeel Pro cover manages heat build-up without relying on standard memory foam.
- Two-inch graphite-infused latex foam layer draws heat away
- 5 ZoneResponse design targets pressure points and spinal alignment
- Ships uncompressed to eliminate foam expansion wait times
- Works on adjustable bed frames and carries CertiPUR-US certification
- At 107 pounds and shipped uncompressed, it is bulky to move through tight spaces
- Provides a lower 12-inch profile than thicker 13- to 16-inch options in the line
- You want responsive latex foam rather than a traditional coil core.
- You change positions at night and need balanced medium support across five zones.
- You plan to use an adjustable base with your King setup.
- You prefer the pronounced bounce of pocketed steel innersprings.
- You want a deep pillow top profile exceeding 12 inches.
Verdict: Serta iComfortPro Chelsea 12" King Latex Mattress suits combination sleepers who want zoned spinal alignment and cooling latex instead of innerspring coils. Its flat, uncompressed delivery allows immediate setup without waiting for compressed foam to expand.
Serta Perfect Sleeper Pro Valais 15" King Mattress
Best for: side sleepers wanting plush zoned latex support
- Size
- King
- Mattress Size
- King
- Thickness
- 15"
- Firmness
- Plush
- Mattress Type
- Latex Hybrid
- Top Style
- Pillow Top
This latex hybrid mattress gives you a 15-inch profile with a plush pillow top surface. Inside, a 5 ZoneActive support core combines zoned coils with graphite-infused natural latex foam to direct heat away across five targeted body zones. It suits you if you sleep on your side and want targeted pressure relief at your hips and shoulders.
- Five-zone coil and latex support system aligns pressure points
- Graphite-infused natural latex foam draws away excess heat
- Plush pillow top cushions shoulders and hips for side sleepers
- Compatible with adjustable bases, platform frames, and box springs
- Heavy 143-pound build makes repositioning difficult
- Ships uncompressed at full size, requiring wide doorways and clear delivery paths
- Tall 15-inch profile requires deep-pocket fitted sheets
- You sleep on your side and need plush cushioning at your hips and shoulders.
- You want a hybrid build with zoned coils and graphite-infused latex foam.
- You have an adjustable frame, platform bed, or standard box spring.
- You prefer a firm or flat sleep surface rather than a plush pillow top.
- You need a compressed, boxed mattress to navigate tight stairwells.
Verdict: Serta Perfect Sleeper Pro Valais 15" King Mattress gives side sleepers zoned pressure relief through a thick latex hybrid build. It delivers plush contouring if your bedroom setup accommodates an uncompressed, 143-pound delivery.
Serta Perfect Sleeper X Kendall 13" Plush King Hybrid
Best for: side sleepers seeking zoned hybrid contouring
- Size
- King
- Mattress Size
- King
- Thickness
- 13"
- Firmness
- Plush
- Mattress Type
- Hybrid
- Top Style
- Smooth Top
The Serta Perfect Sleeper X Kendall is a 13-inch plush hybrid King mattress built with a 5-zone coil core and multiple cooling foam layers. Its graphite-infused memory foam, Cool Twist gel, and Ever Cool Supreme foam draw away body heat. If you sleep on your side and want deep cushioning across your shoulders and hips, this provides contouring pressure relief.
- 5 Zone Active Design targets spinal support using zoned coils and foam
- Graphite-infused and Cool Twist Gel memory foams dissipate heat
- CertiPUR-US certified foams and compatible with adjustable bases
- Ships uncompressed at full 13-inch profile
- Weighs 107 pounds and ships uncompressed, making doorway navigation difficult
- Plush surface lacks the firm resistance required by stomach sleepers
- Smooth top build lacks the lofted cushioning of a pillow top
- You sleep primarily on your side and need pressure relief at your hips and shoulders.
- You use an adjustable base and require compatible hybrid construction.
- You prefer uncompressed delivery over boxed memory foam beds.
- You sleep on your stomach and need a firm surface for spinal alignment.
- You must carry and maneuver the mattress through tight stairwells alone.
Verdict: Serta Perfect Sleeper X Kendall 13" Plush King Hybrid gives side sleepers targeted spinal alignment and heat dissipation through its 5-zone coil unit and graphite foam. It delivers structured pressure relief across broad joints without the slow rebound of all-foam mattresses.
Specifications side by side
| Spec | Serta Five Star Tranquility 10" King | Serta Sleeptrue Firm 12" King | Serta Perfect Sleeper Enhanced 12" Firm King Mattress | Serta Clarks Hill Elite 2.0 Medium King Mattress | Serta Perfect Sleeper Port Angeles 13" Medium King | Serta Perfect Sleeper Port Angeles 13" Firm King | Serta Perfect Sleeper Port Ludlow 15" Plush King | Serta Perfect Sleeper Port Ludlow 14" Extra Firm King | Serta Perfect Sleeper X Extra Firm King Hybrid | Serta iSeries NXG 1500 12-Inch Hybrid King | Serta Perfect Sleeper Port Townsend 12.5" Plush King | Serta iComfortPro Chelsea 12" Medium King Mattress | Serta Perfect Sleeper Pro Valais 15" King Mattress | Serta Perfect Sleeper X Kendall 13" Plush King Hybrid |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mattress Size | King | King | King | King | King | King | King | King | King | King | King | King | King | King |
| Thickness | 10" | 12" | 12 inches | 13.5" | 13" | 13" | 15" | 14" | 13.75" | 12" | 12.5" | 12" | 15" | 13" |
| Firmness | Medium-Firm | Firm | Firm | Medium | Medium | Firm | Plush | Extra Firm | Extra Firm | Firm | Plush | Medium | Plush | Plush |
| Mattress Type | – | Memory Foam | – | – | – | – | – | – | Hybrid | Hybrid | – | Latex Foam | Latex Hybrid | Hybrid |
| Top Style | – | – | – | – | – | – | Pillow Top | – | Quilted Top | – | – | – | Pillow Top | Smooth Top |
| Coil Type | – | – | 825-coil system | 800-density individually-wrapped coils | 860-density 4-in-1 coils | – | 4-in-1 coils | 4-in-1 coils | – | 5-zone coil system | 860-density 4-in-1 coils | – | Zoned coils | – |
| Cooling Tech | – | Cool Twist Gel Memory Foam | Cool Twist Gel Memory Foam | – | Cooling Tech | – | Cooling Tech | Cooling Tech | Graphite infused memory foam | CoolFeel Cover, Carbon Fiber Memory Foam | Cooling Tech | CoolFeel Pro, graphite-infused latex | Graphite-infused latex foam | Graphite foam, Cool Twist Gel foam |
| Certifications | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US | CertiPUR-US |
| Features | – | – | Edge Support | – | – | – | – | – | – | – | – | – | – | – |
| Use | Pressure Relief | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Size | King | King | King | King | King | King | King | King | King | King | King | King | King | King |
| Dimensions | 79.5 × 76 × 10 inches | 79.5 × 76 × 12 inches | 79.5 × 76 × 12 inches | 79.5 × 76 × 13.5 inches | 79.5 × 76 × 13 inches | 79.5 × 76 × 13 inches | 79.5 × 76 × 15 inches | 79.5 × 76 × 14 inches | 79.5 × 76 × 13.8 inches | 79.5 × 76 × 12 inches | 79.5 × 76 × 12.5 inches | 79.5 × 76 × 12 inches | 79.5 × 76 × 15 inches | 79.5 × 76 × 13 inches |
| Weight | 90.3 pounds | – | 95.1 pounds | 105 pounds | 91.6 pounds | 101 pounds | 126 pounds | 120 pounds | 124 pounds | 150 pounds | 82.7 pounds | 107 pounds | 143 pounds | 107 pounds |
| Color | White | Light Blue | Light Blue With Dark Blue Sides | Dark Blue | Blue | Blue | Blue | Blue | Black | Dark Blue | Blue | White | Dark Blue | Black |
| Model | 500944861-1060 | 500707832-1060 | 500302421-1060 | 500705121-1060 | 500324461-1060 | 500324561-1060 | 500307113-1060 | 500306021-1060 | 500145251-1060 | 500400498-1060 | 500304872-1060 | 500800381-1060 | 500122533-1060 | 500011972-1060 |
You can compare dimensions and coil gauges across other brands by examining specs for the best king mattresses.
How to Choose the Right Serta King
Match Firmness to Sleep Position
Match mattress firmness to your sleeping posture to maintain spinal alignment. Back and stomach sleepers require firmer surfaces to prevent lumbar sagging. Side sleepers require softer surfaces for shoulder and hip sinkage. Options range from plush to extra firm. The Serta Perfect Sleeper Port Ludlow 14" Extra Firm King provides rigid support for sleepers who sleep flat on their back or stomach and want minimal surface give.
Compare Core Support Materials
Check whether the internal build uses innerspring coils, memory foam, hybrid layers, or latex. Pocketed coils deliver bounce and airflow, while all-foam structures maximize motion isolation. Latex provides resilient contouring and responsive pushback without relying on metal springs. If you want responsive, spring-free support with natural rebound, look at latex specifications. The Serta iComfortPro Chelsea 12" Medium King Mattress uses an all-foam latex core to cushion joints without coil pushback.
Review Product Weight Ratings
Mattress weight directly affects initial setup and frame requirements. King models on this list vary substantially, from under 83 pounds to 150 pounds. Heavier beds offer dense structural materials but require two people to position safely. They also demand solid foundations that support both mattress mass and sleepers. The Serta iSeries NXG 1500 12-Inch Hybrid King weighs 150 pounds, so check your bed base load capacity before you buy.
Evaluate Zoned Coil Structures
Look for internal zone counts when comparing innerspring and hybrid options. Standard coil cores provide uniform tension across the entire width. Zoned systems use varying wire gauges or coil densities to deliver targeted resistance beneath heavier torso sections while easing pressure beneath shoulders. If you need dedicated lumbar alignment, check the coil count and zoning data. The Serta Clarks Hill Elite 2.0 Medium King Mattress features an 800-coil zoned core for targeted midsection support.
Check Surface Top Style
Surface construction dictates initial contouring before you reach the support core. Standard tight-top builds keep you resting close to the internal layers, yielding a flatter profile. Pillow top designs stitch an extra cushion layer directly onto the surface, yielding deep pressure relief for joint pain. The Serta Perfect Sleeper Port Ludlow 15" Plush King uses a pillow top build to deliver plush joint relief across a 15-inch profile.
Verify Adjustable Base Support
Not every king mattress flexes properly on motorized bases. If you plan to elevate your head or feet, verify adjustable base compatibility in the published specifications. Innerspring models must feature flexible pocketed coils rather than rigid border rods to bend without internal damage. The Serta Perfect Sleeper Port Angeles 13" Medium King specifies adjustable base compatibility, allowing the pocketed coils to articulate smoothly with your motorized bed frame.
Frequently asked questions
What are the exact dimensions of a Serta king mattress?
Every Serta king mattress in this lineup measures 76 inches wide by 79.5 inches long. The overall profile height varies based on internal construction, ranging from 10 inches on the Serta Five Star Tranquility up to 15 inches on models like the Perfect Sleeper Port Ludlow and Pro Valais.
How much do Serta king mattresses weigh?
The weight of a Serta king mattress depends on its core materials and layer density. The lightest listed option is the Serta Perfect Sleeper Port Townsend at 82.7 pounds. In comparison, the heaviest model is the Serta iSeries NXG 1500 Hybrid King, weighing 150 pounds.
Which Serta king mattresses offer an extra firm feel?
You can choose between two extra-firm models in the lineup. The Serta Perfect Sleeper Port Ludlow 14" Extra Firm provides dedicated alignment in a 14-inch profile. Alternatively, the Serta Perfect Sleeper X King Hybrid offers extra-firm support using a 13.8-inch hybrid coil construction.
What coil counts do Serta king innerspring mattresses have?
Published specifications show distinct coil configurations across models. For example, the Serta Clarks Hill Elite 2.0 Medium King utilizes an 800-coil zoned core for targeted lower-back support. The Serta Perfect Sleeper Enhanced 12" Firm King features an 825-coil core paired with a reinforced center gel band.
Does Serta make latex king mattresses?
Yes, Serta builds latex king models in both all-foam and hybrid formats. The 12-inch Serta iComfortPro Chelsea provides medium firmness with an all-foam latex design. If you prefer a taller profile, the 15-inch Serta Perfect Sleeper Pro Valais incorporates both latex and hybrid components with a plush pillow top.
What colors do Serta king mattresses come in?
Serta king models feature distinct fabric colors according to their model line. Options include white on the Five Star Tranquility and iComfortPro Chelsea, blue tones like dark blue on the Clarks Hill Elite 2.0, light blue on the SleepTrue, and black on models like the Perfect Sleeper X Kendall.
Which Serta king mattresses feature 5-zone support systems?
Several models specify five-zone support structures to align your spine. These include the Perfect Sleeper Port Angeles 13" models, the 15" Port Ludlow Plush, the 12.5" Port Townsend Plush, the Perfect Sleeper X Kendall Hybrid, and the 12-inch iSeries NXG 1500 Hybrid King.
See also
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Every number, star and price on this site is read from the Amazon product listing. We do not run lab tests of our own, so scores here are out of 10, based on listed specifications and buyer feedback, not a verdict from a test bench. Prices change without notice; check the listing before buying.
