King Mattresses in Shop Mattresses by Size(1000+)
Sealy Essentials Cool-Touch 11” Hybrid Medium-Feel Queen Mattress-in-a-Box, Adult $394.00

Sealy Essentials Cool-Touch 11” Hybrid Medium-Feel Queen Mattress-in-a-Box, Adult
Rollback Sleep Innovations 8" Cooling, Gel Memory Foam Mattress, Full $128.00 Was $199.99

Sleep Innovations 8" Cooling, Gel Memory Foam Mattress, Full
Kizreo Firm King Mattress, Hybrid Mattress with Gel Memory Foam and Individual Pocket Spring, OEKO-TEX and CertiPUR-US Certified, Cool Sleep, Pressure Relief, 14" in a Box $225.99 Was $406.78

Kizreo Firm King Mattress, Hybrid Mattress with Gel Memory Foam and Individual Pocket Spring, OEKO-TEX and CertiPUR-US Certified, Cool Sleep, Pressure Relief, 14" in a Box
Imaginarium 10" Hybrid of Memory Foam and Coils Mattress with Antimicrobial Treated Cover, King $248.00

Imaginarium 10" Hybrid of Memory Foam and Coils Mattress with Antimicrobial Treated Cover, King
In 200+ people's carts Zinus Spa Sensations Serenity 8" Memory Foam Mattress, Twin $98.88 Was $174.00

Zinus Spa Sensations Serenity 8" Memory Foam Mattress, Twin
Flash Deal King Mattress, 12-inch Hybrid King Mattress in a Box, Memory Foam Mattress with Pocket Springs, Pressure Relief, Motion Isolation, CertiPUR-US Certified $127.99 Was $329.00

King Mattress, 12-inch Hybrid King Mattress in a Box, Memory Foam Mattress with Pocket Springs, Pressure Relief, Motion Isolation, CertiPUR-US Certified
50+ bought since yesterday EDX 10 Inch King Memory Foam Mattress for Cooling Charcoal, Medium Firm Support for Back Pain Relief, CertiPUR-US Certified ,Fiberglass Free,Mattress in a Box $106.99 Was $149.99

EDX 10 Inch King Memory Foam Mattress for Cooling Charcoal, Medium Firm Support for Back Pain Relief, CertiPUR-US Certified ,Fiberglass Free,Mattress in a Box
Clearance King Mattress 14 inch Mattress King Size, Cooling Memory Foam Mattress in a Box, Medium-Firm for Pressure Relief&Cooler Sleep, CertiPUR-US $279.99 Was $1,899.99

King Mattress 14 inch Mattress King Size, Cooling Memory Foam Mattress in a Box, Medium-Firm for Pressure Relief&Cooler Sleep, CertiPUR-US
Best seller KOW Mattress 12 inch Full Size, Gel Memory Foam Hybrid Mattress in a Box, Cozy Sleep $125.99 Was $339.99

KOW Mattress 12 inch Full Size, Gel Memory Foam Hybrid Mattress in a Box, Cozy Sleep
Rollback Serta 10" Queen Medium Gel Memory Foam Mattress – Cooling Comfort & Pressure Relief $328.00 Was $378.00

Serta 10" Queen Medium Gel Memory Foam Mattress – Cooling Comfort & Pressure Relief
MLILY Ego Gray Queen Mattress 12 inch, Gel Memory Foam Mattress Queen, Beds in a Box, Medium $242.99 Was $550.00

MLILY Ego Gray Queen Mattress 12 inch, Gel Memory Foam Mattress Queen, Beds in a Box, Medium
GREOO King Size Mattress in a Box 14" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-US $250.21 Was $499.99

GREOO King Size Mattress in a Box 14" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-US
Rollback The Allswell 10" Hybrid Mattress in a Box with Gel Memory Foam, Adult, Queen $282.00 Was $352.00

The Allswell 10" Hybrid Mattress in a Box with Gel Memory Foam, Adult, Queen
Best seller Zinus Cooling Airflow 10" Hybrid Mattress in a Box, Adult, Queen $198.00

Zinus Cooling Airflow 10" Hybrid Mattress in a Box, Adult, Queen
Mainstays 8" Pocket Spring Hybrid Bed Mattress in a Box, Medium Firm Full $178.00

Mainstays 8" Pocket Spring Hybrid Bed Mattress in a Box, Medium Firm Full

Best seller GREOO Queen Size Mattress 12" Hybrid Mattress in a Box Gel Memory Foam and Pocket Springs with Motion Isolation, Medium Firm, Pressure Relief, CertiPUR-US® & OEKO-TEX® STANDARD 100 Certified $229.99 Was $369.99

GREOO Queen Size Mattress 12" Hybrid Mattress in a Box Gel Memory Foam and Pocket Springs with Motion Isolation, Medium Firm, Pressure Relief, CertiPUR-US® & OEKO-TEX® STANDARD 100 Certified
Clearance King Size Mattress, 14 Inch Gel Memory Foam King Mattress for Cooling Night & Pressure Relief, Medium Plush Feel with Motion Isolating $283.99 Was $1,499.99

King Size Mattress, 14 Inch Gel Memory Foam King Mattress for Cooling Night & Pressure Relief, Medium Plush Feel with Motion Isolating
Flash Deal Avenco Original 12" Medium-Firm Gel Memory Foam Hybrid Mattress,Queen Size $160.02 Was $274.99

Avenco Original 12" Medium-Firm Gel Memory Foam Hybrid Mattress,Queen Size
Kviwasha Queen Mattress 12 inch Hybrid Gel Memory Foam & Pocket Innerspring, Pressure-Relief, Medium Firm Mattress $115.80 Was $196.20

Kviwasha Queen Mattress 12 inch Hybrid Gel Memory Foam & Pocket Innerspring, Pressure-Relief, Medium Firm Mattress
Flash Deal 12 inch King Mattress,Hybrid Mattresses Medium Firm in a Box $202.91 Was $443.00

12 inch King Mattress,Hybrid Mattresses Medium Firm in a Box
GREOO King Size Mattress 14" Hybrid Mattress in a Box Gel Memory Foam and Pocket Springs with Motion Isolation, Medium Firm, Pressure Relief, CertiPUR-US® & OEKO-TEX® STANDARD 100 Certified $295.44 Was $499.99

GREOO King Size Mattress 14" Hybrid Mattress in a Box Gel Memory Foam and Pocket Springs with Motion Isolation, Medium Firm, Pressure Relief, CertiPUR-US® & OEKO-TEX® STANDARD 100 Certified
MLILY Ego Black Firm Cooling Gel Memory Foam Mattress, 14 inch Queen Mattress in a Box $359.99 Was $699.00

MLILY Ego Black Firm Cooling Gel Memory Foam Mattress, 14 inch Queen Mattress in a Box
Clearance NISIEN Queen Mattress, 10 Inch Hybrid Memory Foam Mattress in a Box, Pressure Relief, CertiPUR-US $139.99 Was $270.00

NISIEN Queen Mattress, 10 Inch Hybrid Memory Foam Mattress in a Box, Pressure Relief, CertiPUR-US
Clearance ENSHUI 12-inch Gel Memory Foam Twin Mattress - Cooling Sleep & Pressure Relief, Medium-Firm with Motion Isolation for Blissful Rest $109.99 Was $326.88

ENSHUI 12-inch Gel Memory Foam Twin Mattress - Cooling Sleep & Pressure Relief, Medium-Firm with Motion Isolation for Blissful Rest
Clearance King Mattress, Holaki 14" King Gel Memory Foam with Bamboo Charcoal Silicone Mattress in a Box, Medium Firm, CertiPUR-US $239.99 Was $478.99
King Mattress, Holaki 14" King Gel Memory Foam with Bamboo Charcoal Silicone Mattress in a Box, Medium Firm, CertiPUR-US
GREOO Queen Size Mattress in a Box 12" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-US $147.99 Was $189.99

GREOO Queen Size Mattress in a Box 12" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-US

In 200+ people's carts Mocangtu 12" Queen Hybrid Mattress in a Box, Gel Memory Foam with Individually Wrapped Pocket Coils, Medium Firm, Pressure Relief, Cooling Sleep Support $139.99 Was $216.99

Mocangtu 12" Queen Hybrid Mattress in a Box, Gel Memory Foam with Individually Wrapped Pocket Coils, Medium Firm, Pressure Relief, Cooling Sleep Support
Rollback Novilla Atease 8" Twin Size Medium Adult Memory Foam Mattress $92.48 Was $185.99

Novilla Atease 8" Twin Size Medium Adult Memory Foam Mattress
Queen Mattress, JIAVA 12" Soft Hybrid Innerspring Mattress and Gel Memory Foam $139.99 Was $376.99

Queen Mattress, JIAVA 12" Soft Hybrid Innerspring Mattress and Gel Memory Foam
Reduced price Novilla Snowfall 12 inch Queen size Mattress in a Box, Hybrid Medium Support Mattresses, Pocket Spring and CertiPUR-US, Pressure Relief & Motion Isolation $154.00 Was $619.98

Novilla Snowfall 12 inch Queen size Mattress in a Box, Hybrid Medium Support Mattresses, Pocket Spring and CertiPUR-US, Pressure Relief & Motion Isolation
Rollback Zinus Spa Sensations Serenity 8" Memory Foam Mattress, Queen $223.00 Was $248.00

Zinus Spa Sensations Serenity 8" Memory Foam Mattress, Queen
Rollback The Allswell 10" Hybrid Mattress in a Box with Gel Memory Foam, Adult, Twin $192.00 Was $232.00

The Allswell 10" Hybrid Mattress in a Box with Gel Memory Foam, Adult, Twin
Reduced price Avenco Airsea 10"Twin Size Medium Firm Support Hybrid Mattress, Motion isolation Pressure Relif, CertiPUR-US $94.00 Was $198.28

Avenco Airsea 10"Twin Size Medium Firm Support Hybrid Mattress, Motion isolation Pressure Relif, CertiPUR-US
Signature Design by Ashley 12 Inch Chime Hybrid Innerspring Ultra Plush King Mattress $400.00 Was $479.99

Signature Design by Ashley 12 Inch Chime Hybrid Innerspring Ultra Plush King Mattress
Vantto Queen Mattress, 12 Inch Hybrid Memory Foam Mattress in a Box, Pressure Relief, CertiPUR-US $149.99

Vantto Queen Mattress, 12 Inch Hybrid Memory Foam Mattress in a Box, Pressure Relief, CertiPUR-US
Viscountess Black 14 inch Queen Mattress Gel Memory Foam Hybrid Mattress in a box Queen Medium Euro Top Pocket Innerspring $188.00 Was $369.00

Viscountess Black 14 inch Queen Mattress Gel Memory Foam Hybrid Mattress in a box Queen Medium Euro Top Pocket Innerspring
Novilla Vela 12 inch Queen Mattress, Hybrid Mattresses with Cooling Gel Memory Foam in a Box, Pressure Relief, CertiPUR-US Certified $180.58 Was $417.99

Novilla Vela 12 inch Queen Mattress, Hybrid Mattresses with Cooling Gel Memory Foam in a Box, Pressure Relief, CertiPUR-US Certified
King Mattress, 12 Inch Hybrid Memory Foam Mattress in a Box with Individual Pocket Spring for Motion Isolation & Silent Sleep, CertiPUR-US, 100 Nights Trial $155.99

King Mattress, 12 Inch Hybrid Memory Foam Mattress in a Box with Individual Pocket Spring for Motion Isolation & Silent Sleep, CertiPUR-US, 100 Nights Trial
In 100+ people's carts GUUKIN 12 inch Queen Mattress, Memory Foam & Spring Hybrid Medium Comfort Queen Size in a Box,Adult $145.99 Was $269.99

GUUKIN 12 inch Queen Mattress, Memory Foam & Spring Hybrid Medium Comfort Queen Size in a Box,Adult
Pixafog 12 inch Queen Mattress in a Box, Individual Pocket Spring Mattress with Motion Isolation, Pressure Relief & Edge Support, Medium, Euro Top $144.99 Was $249.99
Pixafog 12 inch Queen Mattress in a Box, Individual Pocket Spring Mattress with Motion Isolation, Pressure Relief & Edge Support, Medium, Euro Top
WARMKISS 5" Gel Memory Foam Twin Mattress for Kids, Plush Pillowtop, Breathable, Fiberglass-Free, CertiPUR-US Certified $83.99 Was $139.99

WARMKISS 5" Gel Memory Foam Twin Mattress for Kids, Plush Pillowtop, Breathable, Fiberglass-Free, CertiPUR-US Certified
Crystli 10" King Size Pocket Innerspring Memory Foam Hybrid Mattress in a Box $149.99

Crystli 10" King Size Pocket Innerspring Memory Foam Hybrid Mattress in a Box
Avenco Victoria 6" Medium Gel Memory Foam Cooling Motion Isolation Mattress, Twin Size $71.99

Avenco Victoria 6" Medium Gel Memory Foam Cooling Motion Isolation Mattress, Twin Size
Behost 10 Inch Queen Mattress in a Box, CertiPUR-US Memory Foam & Pocket Spings Medium Firm Hybrid Bed Mattress for Sleep $139.99 Was $299.99

Behost 10 Inch Queen Mattress in a Box, CertiPUR-US Memory Foam & Pocket Spings Medium Firm Hybrid Bed Mattress for Sleep
Rollback NapQueen Victoria 10" Queen, Gel Infused Memory Foam and Pocket Spring Hybrid Mattress in a Box, Adult $148.00 Was $228.00

NapQueen Victoria 10" Queen, Gel Infused Memory Foam and Pocket Spring Hybrid Mattress in a Box, Adult
King Size Mattress in a Box, 14in King Mattress, Memory Foam Mattress with Cooling Gel, Pocket Springs for Motion Isolation $299.99 Was $1,699.99

King Size Mattress in a Box, 14in King Mattress, Memory Foam Mattress with Cooling Gel, Pocket Springs for Motion Isolation
Avenco Dreamy 10" Medium Firm Hybrid Mattress, Full Size $112.06 Was $139.99

Avenco Dreamy 10" Medium Firm Hybrid Mattress, Full Size
Novilla Mattress Queen Size, 12 Inch Gel Queen Memory Foam Mattress in a Box for Suppotive, Pressure Relieving & Plush Comfort, Bliss $299.99 $299.99/ca

Novilla Mattress Queen Size, 12 Inch Gel Queen Memory Foam Mattress in a Box for Suppotive, Pressure Relieving & Plush Comfort, Bliss
Avenco Whisper 12" Queen Size Medium Firm Individual Pocket Hybrid Support Mattress,CertiPUR-US Certified $158.00 Was $419.98

Avenco Whisper 12" Queen Size Medium Firm Individual Pocket Hybrid Support Mattress,CertiPUR-US Certified
Kizreo Firm Queen Mattress, Hybrid Mattress with Gel Memory Foam and Individual Pocket Spring, OEKO-TEX and CertiPUR-US Certified, Cool Sleep, Pressure Relief, 12" in a Box $175.99 Was $316.78

Kizreo Firm Queen Mattress, Hybrid Mattress with Gel Memory Foam and Individual Pocket Spring, OEKO-TEX and CertiPUR-US Certified, Cool Sleep, Pressure Relief, 12" in a Box
Popular in King Mattresses in Shop Mattresses by Size - Walmart.com
FAQ
How do I choose the right firmness for a king mattress?
Choosing the right firmness depends on your sleeping style and comfort preferences. Firm mattresses offer strong support and are often preferred by back and stomach sleepers. Medium-firm mattresses provide a balance of support and cushioning, suitable for most sleepers. Softer mattresses are ideal if you prefer a plush feel or sleep on your side, as they help relieve pressure points. Consider factors like body weight and any existing aches. Testing different firmness levels in-store or reading detailed product descriptions online can help you find the best fit for restful sleep.
What benefits do hybrid king mattresses offer compared to foam ones?
Hybrid king mattresses combine innerspring coils with memory foam or gel layers, offering a mix of support and comfort.
- Support: The pocketed coils provide strong edge support and better airflow.
- Comfort: Foam layers contour to your body, relieving pressure points.
- Temperature regulation: Hybrid designs often include cooling gels to help reduce heat buildup.
How long can I expect a king mattress to last with regular use?
The lifespan of a king mattress varies based on materials and care but generally ranges from 7 to 10 years.
- Memory foam and hybrid mattresses often last around 8 to 10 years with proper maintenance.
- Innerspring mattresses might have a slightly shorter lifespan, closer to 7 years.
What should I know about mattress-in-a-box options for king beds?
Mattress-in-a-box king mattresses are compressed and rolled for easy shipping and setup.
- Convenience: They arrive at your door ready to unbox and expand, making delivery hassle-free.
- Variety: Available in foam, hybrid, and gel-infused options to suit different comfort needs.
- Expansion time: Most mattresses take 24 to 72 hours to fully expand after unboxing.
- Trial periods: Many come with trial periods allowing you to test comfort at home.
How can I keep my king mattress clean and fresh over time?
Maintaining a clean king mattress helps extend its life and comfort.
- Use a mattress protector: This guards against spills, dust, and allergens.
- Regular cleaning: Vacuum the mattress surface every few months to remove dust and debris.
- Spot cleaning: Treat stains promptly with mild detergent and water, avoiding soaking the mattress.
- Air it out: Occasionally let your mattress breathe by removing bedding and opening windows.












