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
In 50+ people's carts GREOO King Size Mattress in a Box 14" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-US $299.99 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
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
In 50+ people's carts 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 $339.99 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
Twin Mattress, 10-inch Hybrid Twin Mattress in a Box, Memory Foam Mattress with Pocket Springs, Pressure Relief, Motion Isolation, CertiPUR-US Certified $67.89 Was $138.98

Twin Mattress, 10-inch Hybrid Twin Mattress in a Box, Memory Foam Mattress with Pocket Springs, Pressure Relief, Motion Isolation, CertiPUR-US Certified
Best seller EDX 10 Inch Twin XL Memory Foam Mattress for Cooling Charcoal, Medium Firm Support for Back Pain Relief, CertiPUR-US Certified ,Fiberglass Free,Mattress in a Box $97.99

EDX 10 Inch Twin XL 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
Rollback Zinus Spa Sensations Serenity 8" Memory Foam Mattress, Full $178.00 Was $198.00

Zinus Spa Sensations Serenity 8" Memory Foam Mattress, Full
Zinus Cooling Airflow 8" Hybrid Mattress in a Box, Adult, Twin $97.98

Zinus Cooling Airflow 8" Hybrid Mattress in a Box, Adult, Twin
50+ bought since yesterday KOW Mattress Queen 12 inch Hybrid Mattress in a Box, Upgrade 7-Zone Support $139.99 Was $289.99

KOW Mattress Queen 12 inch Hybrid Mattress in a Box, Upgrade 7-Zone Support
MLILY Ego Black Firm Cooling Gel Memory Foam Mattress, 14 inch Cal King Size Mattress in a Box $449.99 Was $900.00

MLILY Ego Black Firm Cooling Gel Memory Foam Mattress, 14 inch Cal King Size Mattress in a Box
Kizreo Firm Queen 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 $229.88 Was $334.78

Kizreo Firm Queen Mattress, Hybrid Mattress with Gel Memory Foam and Individual Pocket Spring, OEKO-TEX and CertiPUR-US Certified, Cool Sleep, Pressure Relief, 14" in a Box
In 200+ people's carts The Allswell 10" Hybrid Mattress in a Box with Gel Memory Foam, Adult, Queen $282.00

The Allswell 10" Hybrid Mattress in a Box with Gel Memory Foam, Adult, Queen
Clearance Queen Size Mattress, 14 Inch Gel Memory Foam King Mattress for Cooling Night & Pressure Relief, Medium Plush Feel with Motion Isolating $245.99

Queen Size Mattress, 14 Inch Gel Memory Foam King Mattress for Cooling Night & Pressure Relief, Medium Plush Feel with Motion Isolating
Best seller GREOO Full Size Mattress 10" 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 $169.99 Was $289.99

GREOO Full Size Mattress 10" 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 King Size Mattress in a Box $429.99 Was $799.00

MLILY Ego Black Firm Cooling Gel Memory Foam Mattress, 14 inch King Size Mattress in a Box
Serta 10 inch, Full Mattress, Medium Mattress, Gel Memory Foam Mattress, Cooling, Pressure Relief, Mattress in a Box, Full Size Mattress $284.00

Serta 10 inch, Full Mattress, Medium Mattress, Gel Memory Foam Mattress, Cooling, Pressure Relief, Mattress in a Box, Full Size Mattress
GREOO Twin Size Mattress in a Box 10" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-US $149.99 Was $245.99

GREOO Twin Size Mattress in a Box 10" Hybrid Cooling Gel Memory Foam with Individually Pocket Coils Firm Pressure Relief CertiPUR-US
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
Twin Mattress, Holaki 10" Twin Gel Memory Foam with Bamboo Charcoal Silicone Mattress in a Box, Medium Firm, CertiPUR-US $79.99 Was $99.99
Twin Mattress, Holaki 10" Twin Gel Memory Foam with Bamboo Charcoal Silicone Mattress in a Box, Medium Firm, CertiPUR-US
Rollback NapQueen Victoria 12" Queen, Gel Infused Memory Foam and Pocket Spring Hybrid Mattress in a Box, Adult $168.00 Was $220.00

NapQueen Victoria 12" Queen, Gel Infused Memory Foam and Pocket Spring Hybrid Mattress in a Box, Adult
Arctus 8“ Twin Mattress, Gel Memory Foam Twin Size Mattress in a Box, Medium Firm $99.00 Was $178.00

Arctus 8“ Twin Mattress, Gel Memory Foam Twin Size Mattress in a Box, Medium Firm
Best seller Vantto Twin Mattress, 10 Inch Mattress Twin Size, Memory Foam Mattress in a Box with Motion Isolation, Pressure Relief, CertiPUR-US $104.99

Vantto Twin Mattress, 10 Inch Mattress Twin Size, Memory Foam Mattress in a Box with Motion Isolation, Pressure Relief, CertiPUR-US
Best seller 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
Best seller NapQueen Victoria 8" Full, Gel Infused Memory Foam and Pocket Spring Hybrid Mattress in a Box, Adult $108.00 Was $178.00

NapQueen Victoria 8" Full, Gel Infused Memory Foam and Pocket Spring Hybrid Mattress in a Box, Adult
Reduced price Avenco Whisper 12" Full Size Medium Firm Individual Pocket Hybrid Support Mattress,CertiPUR-US Certified $124.00 Was $379.98

Avenco Whisper 12" Full Size Medium Firm Individual Pocket Hybrid Support Mattress,CertiPUR-US Certified

Twin Mattress,Nisien 10 Inch Hybrid Mattress in a Box, Gel Memory Foam Mattress, Individually Wrapped Pocket Coils Innerspring Mattress, Support & Pressure Relief, Medium Firm Feel, 39"*75"*10" $109.99 Was $179.99

Twin Mattress,Nisien 10 Inch Hybrid Mattress in a Box, Gel Memory Foam Mattress, Individually Wrapped Pocket Coils Innerspring Mattress, Support & Pressure Relief, Medium Firm Feel, 39"*75"*10"
Flash Deal Crystli 12" Hybrid King Mattress Memory Foam Mattress with Wrapped Innersprings Medium Firm Bed-in-a-Box CertiPUR-US Certified King Mattresses $139.99 Was $362.99

Crystli 12" Hybrid King Mattress Memory Foam Mattress with Wrapped Innersprings Medium Firm Bed-in-a-Box CertiPUR-US Certified King Mattresses
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
Zinus Gel Airflow 10" Tight Top Memory Foam Mattress CertiPUR-US Certified, Queen $178.00

Zinus Gel Airflow 10" Tight Top Memory Foam Mattress CertiPUR-US Certified, Queen
60% Semi-Waveless Hardside Waterbed Mattress Bundle with Two Fiber Layers, Liner, Fill/Drain Kit & Conditioner - No Frame, Size Super Single $167.34

60% Semi-Waveless Hardside Waterbed Mattress Bundle with Two Fiber Layers, Liner, Fill/Drain Kit & Conditioner - No Frame, Size Super Single
Reduced price Gibaha 12 inch Queen Mattress in a Box, Gel Memory Foam and Pocket Spring, Hybrid Medium Comfort, Pressure Relief & Motion Isolation $166.99 Was $249.99

Gibaha 12 inch Queen Mattress in a Box, Gel Memory Foam and Pocket Spring, Hybrid Medium Comfort, Pressure Relief & Motion Isolation
Avenco Original 12" Medium-Firm Gel Memory Foam Hybrid Mattress,Queen Size $162.02 Was $274.99

Avenco Original 12" Medium-Firm Gel Memory Foam Hybrid Mattress,Queen Size
Kviwasha Queen Mattress 14 inch Hybrid Gel Memory Foam & Pocket Innerspring, Pressure-Relief, Medium Firm Mattress $199.80 Was $355.60

Kviwasha Queen Mattress 14 inch Hybrid Gel Memory Foam & Pocket Innerspring, Pressure-Relief, Medium Firm Mattress
King Size Mattress,14 Inch Mattress in a Box with Memory Foam & Individual Pocket Spring for Edge Support,Pressure Relief,Medium Firm,CertiPUR-US. $259.99 Was $1,489.99

King Size Mattress,14 Inch Mattress in a Box with Memory Foam & Individual Pocket Spring for Edge Support,Pressure Relief,Medium Firm,CertiPUR-US.
Kizreo 12" Queen Size Extra Firm Hybrid Mattress, Pressure & Pain Relief $299.88

Kizreo 12" Queen Size Extra Firm Hybrid Mattress, Pressure & Pain Relief
MLILY Ego Gray 12 inch Twin Mattress in a Box, Twin Mattress Gel Memory Foam Mattress, Medium $175.99 Was $400.00

MLILY Ego Gray 12 inch Twin Mattress in a Box, Twin Mattress Gel Memory Foam Mattress, Medium
LayRoad 12 inch Queen Mattress Medium Firm Cooling Memory Foam Mattress, Gray $169.99
LayRoad 12 inch Queen Mattress Medium Firm Cooling Memory Foam Mattress, Gray
Rollback Kizreo Firm Twin Mattress, Hybrid Mattress with Gel Memory Foam and Individual Pocket Spring, OEKO-TEX and CertiPUR-US Certified, Cool Sleep, Pressure Relief, 10" in a Box $129.88 Was $215.19

Kizreo Firm Twin Mattress, Hybrid Mattress with Gel Memory Foam and Individual Pocket Spring, OEKO-TEX and CertiPUR-US Certified, Cool Sleep, Pressure Relief, 10" in a Box
MRH Twin 12 inch Euro Top Hybrid Mattress – Memory Foam, Individually Pocket Springs, Medium Firm, Strong Edge Support, White Black Rim $108.00 Was $120.00

MRH Twin 12 inch Euro Top Hybrid Mattress – Memory Foam, Individually Pocket Springs, Medium Firm, Strong Edge Support, White Black Rim
Queen Rose 12 inch Full Size Last Foam Memory Foam Mattress in a Box, Medium Firm $119.99 Was $229.99

Queen Rose 12 inch Full Size Last Foam Memory Foam Mattress in a Box, Medium Firm
Rollback Serta 12" Twin Perfect Sleeper Nurture Night Firm Innerspring Mattress $380.00 Was $599.00

Serta 12" Twin Perfect Sleeper Nurture Night Firm Innerspring Mattress
Crystli 10" Queen Size Pocket Innerspring Memory Foam Hybrid Mattress in a Box $119.99

Crystli 10" Queen Size Pocket Innerspring Memory Foam Hybrid Mattress in a Box
The Allswell Supreme 14" Bed in a Box Hybrid Mattress, King $567.00

The Allswell Supreme 14" Bed in a Box Hybrid Mattress, King
Firm Flippable Mattress Full Size, 8 Inch Medium Firm - Firm Dual Sided Gel Memory Foam Mattress for Back Pain Relief, CertiPUR-US $159.99

Firm Flippable Mattress Full Size, 8 Inch Medium Firm - Firm Dual Sided Gel Memory Foam Mattress for Back Pain Relief, CertiPUR-US
Signature Design by Ashley 12 Inch Chime Hybrid Innerspring Ultra Plush Twin Mattress $249.99 Was $499.99

Signature Design by Ashley 12 Inch Chime Hybrid Innerspring Ultra Plush Twin Mattress
Avenco Dreamy 12" Medium Firm Hybrid Mattress, Full Size $121.73 Was $309.99

Avenco Dreamy 12" Medium Firm Hybrid Mattress, Full Size
Full Size Mattress JIAVA 12" Soft Memory Foam Mattress Cool Gel $129.99 Was $329.99

Full Size Mattress JIAVA 12" Soft Memory Foam Mattress Cool Gel
Novilla Vela 14 inch Full Mattress, Hybrid Mattresses with Cooling Gel Memory Foam in a Box, Pressure Relief, CertiPUR-US Certified $172.00 Was $434.99

Novilla Vela 14 inch Full Mattress, Hybrid Mattresses with Cooling Gel Memory Foam in a Box, Pressure Relief, CertiPUR-US Certified
Mocangtu 12" Twin Hybrid Mattress in a Box, Gel Memory Foam with Individually Wrapped Pocket Coils, Medium Firm, Pressure Relief, Cooling Sleep Support $119.99 Was $168.99

Mocangtu 12" Twin Hybrid Mattress in a Box, Gel Memory Foam with Individually Wrapped Pocket Coils, Medium Firm, Pressure Relief, Cooling Sleep Support
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.
















