California King Mattresses in Shop Mattresses by Size(750)
Nectar Classic 12” Queen Mattress - Medium Firm - Contouring Memory Foam - Cooling Top Layer - Support & Pressure-Relief - Mattress in a Box - 365-Night Trial & Forever Warranty $649.00

Nectar Classic 12” Queen Mattress - Medium Firm - Contouring Memory Foam - Cooling Top Layer - Support & Pressure-Relief - Mattress in a Box - 365-Night Trial & Forever Warranty
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
EGOHOME Ego Black 12 inch Queen Mattress in a Box, Gel Memory Foam Mattress, Medium Firm $369.99 Was $699.00

EGOHOME Ego Black 12 inch Queen Mattress in a Box, Gel Memory Foam Mattress, Medium Firm
EGOHOME 14 inch Full Size Mattress in a Box, Cooling Gel Memory Foam Mattress, Medium Firm $299.00 Was $559.00

EGOHOME 14 inch Full Size Mattress in a Box, Cooling Gel Memory Foam Mattress, Medium Firm
In 200+ people's carts KOW Mattress 12 inch Full Size, Gel Memory Foam Hybrid Mattress in a Box, Cozy Sleep $129.98 Was $339.99

KOW Mattress 12 inch Full Size, Gel Memory Foam Hybrid Mattress in a Box, Cozy Sleep
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 $158.00 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
MLILY Ego Gray 14 inch Queen Mattress in a Box, Gel Memory Foam Mattress Queen, Beds in a Box, Medium $315.00 Was $650.00

MLILY Ego Gray 14 inch Queen Mattress in a Box, Gel Memory Foam Mattress Queen, Beds in a Box, Medium
Overall pick 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
Rollback Serta 10 inch, Queen Mattress, Medium Mattress, Gel Memory Foam Mattress, Cooling, Pressure Relief, Mattress in a Box, Queen Size Mattress $328.00 Was $378.00

Serta 10 inch, Queen Mattress, Medium Mattress, Gel Memory Foam Mattress, Cooling, Pressure Relief, Mattress in a Box, Queen Size Mattress
PAMAG PIEEOO 8 inch Twin Size Gel Memory Foam Mattress in a Box, Cooling Sleep & Pressure Relief $89.99 Was $105.99

PAMAG PIEEOO 8 inch Twin Size Gel Memory Foam Mattress in a Box, Cooling Sleep & Pressure Relief
Sweetnight CoolNest Memory Foam King Size Mattress 14 inch Cooling Mattresses in a Box,Scientific Support,Medium Soft $549.99

Sweetnight CoolNest Memory Foam King Size Mattress 14 inch Cooling Mattresses in a Box,Scientific Support,Medium Soft
Brooklyn Bedding Standard 14" King Plush Hybrid Mattress with Cooling Cover $338.00

Brooklyn Bedding Standard 14" King Plush Hybrid Mattress with Cooling Cover
Rollback EGOHOME Ego Black 14 inch Queen Memory Foam Mattress, Gel Mattress in a Box, Medium Firm $429.00 Was $850.00

EGOHOME Ego Black 14 inch Queen Memory Foam Mattress, Gel Mattress in a Box, Medium Firm
Avenco Dreamy 10" Medium Firm Hybrid Mattress, Full Size $111.06

Avenco Dreamy 10" Medium Firm Hybrid Mattress, Full Size
Flash Deal JYYA88BB 8-inch Twin-XL Size Gel Memory Foam Mattress, CertiPUR-US Certified, Bed-in-a-Box $91.98 Was $179.99

JYYA88BB 8-inch Twin-XL Size Gel Memory Foam Mattress, CertiPUR-US Certified, Bed-in-a-Box
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
EGOHOME King Mattress, 14 inch Memory Foam Mattress in a Box with Cooling Gel, Medium Firm $398.99 Was $759.00

EGOHOME King Mattress, 14 inch Memory Foam Mattress in a Box with Cooling Gel, Medium Firm
KOW Hybrid Mattress 12" Full Size Gel Memory Foam Pocket Spring Mattress in a Box Medium Adult $129.98

KOW Hybrid Mattress 12" Full Size Gel Memory Foam Pocket Spring Mattress in a Box Medium Adult
Best seller Sweetnight Twilighty 12" Cooling Gel Memory Foam Medium Firm Supportive Hybrid Mattress, Motion Isolation & CertiPUR-US Certified,Adult,Full Size $188.00

Sweetnight Twilighty 12" Cooling Gel Memory Foam Medium Firm Supportive Hybrid Mattress, Motion Isolation & CertiPUR-US Certified,Adult,Full Size
In 100+ people's carts FDW Memory Foam Mattress 8 inch Twin Size Gel Mattress for Cool Sleep Pressure Relief CertiPUR-US Certified/Bed-in-a-Box/Pressure Relieving $89.99 Was $170.96

FDW Memory Foam Mattress 8 inch Twin Size Gel Mattress for Cool Sleep Pressure Relief CertiPUR-US Certified/Bed-in-a-Box/Pressure Relieving
Rollback Brooklyn Bedding 12" Queen Firm Memory Foam Mattress in a Box $264.00 Was $358.00

Brooklyn Bedding 12" Queen Firm Memory Foam Mattress in a Box
Rollback EGOHOME Ego Black 14 inch Queen Memory Foam Mattress, Gel Mattress in a Box, Medium Firm $429.00 Was $850.00

EGOHOME Ego Black 14 inch Queen Memory Foam Mattress, Gel Mattress in a Box, Medium Firm
12 Inch Full Mattress in a Box, Memory Foam Hybrid Mattress with Individually Pocketed Springs for Isolate Motion, Pressure Relief, CertiPUR-US Certified $169.99

12 Inch Full Mattress in a Box, Memory Foam Hybrid Mattress with Individually Pocketed Springs for Isolate Motion, Pressure Relief, CertiPUR-US Certified
Cool Gel Mercer 12" Full Pillow Top Hybrid Mattress $238.08 Was $339.99

Cool Gel Mercer 12" Full Pillow Top Hybrid Mattress
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
EGOHOME Ego Black 12 inch Queen Mattress in a Box, Gel Memory Foam Mattress, Medium Firm $369.99 Was $699.00

EGOHOME Ego Black 12 inch Queen Mattress in a Box, Gel Memory Foam Mattress, Medium Firm
The Allswell Luxe 12" Queen Medium Firm Bed in a Box Hybrid Mattress $387.00

The Allswell Luxe 12" Queen Medium Firm Bed in a Box Hybrid Mattress
Serta 13" Queen Classic Clarks Hill Elite Ltd Firm Tight Top Innerspring Adult Mattress $499.00

Serta 13" Queen Classic Clarks Hill Elite Ltd Firm Tight Top Innerspring Adult Mattress
Cool Gel 8" Twin Medium Tight Top Gel Memory Foam Mattress, White $102.14 Was $128.99

Cool Gel 8" Twin Medium Tight Top Gel Memory Foam Mattress, White
Nectar Classic Hybrid 12” Cal King Mattress - Medium Firm - Memory Foam & Innerspring Coils - Cooling Top Layer - Pressure-Relief - Mattress in a Box - 365-Night Trial & Forever Warranty $999.00

Nectar Classic Hybrid 12” Cal King Mattress - Medium Firm - Memory Foam & Innerspring Coils - Cooling Top Layer - Pressure-Relief - Mattress in a Box - 365-Night Trial & Forever Warranty
Flash Deal CIUANCE 12 inch Queen Mattress,Cooling Gel Memory Foam Mattress in a Box,Fiberglass Free Bed for Pressure Relief & Back Pain, CertiPUR-US Certified $124.99

CIUANCE 12 inch Queen Mattress,Cooling Gel Memory Foam Mattress in a Box,Fiberglass Free Bed for Pressure Relief & Back Pain, CertiPUR-US 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
EGOHOME DY Black 14 inch Queen Mattress in a Box, Cooling Gel Memory Foam Mattress, Medium $424.98

EGOHOME DY Black 14 inch Queen Mattress in a Box, Cooling Gel Memory Foam Mattress, Medium
Full Size Mattress, 10" Memory Foam Mattress with Graphene Fabric Cover, Bed in a Box $129.99 Was $322.98

Full Size Mattress, 10" Memory Foam Mattress with Graphene Fabric Cover, Bed in a Box
Rollback EGOHOME Queen Mattress, Gel Memory Foam 10" Mattress in a Box, Ego Serenity $198.00 Was $396.00

EGOHOME Queen Mattress, Gel Memory Foam 10" Mattress in a Box, Ego Serenity
The Allswell Supreme 14" Bed in a Box Hybrid Mattress, Queen $487.00

The Allswell Supreme 14" Bed in a Box Hybrid Mattress, Queen
95% Waveless Hardside Waterbed Mattress Bundle with Five Wave Reducing Fiber Layers, Liner, Fill/Drain Kit & Conditioner, Frame NOT Included, Size Super Single $282.35

95% Waveless Hardside Waterbed Mattress Bundle with Five Wave Reducing Fiber Layers, Liner, Fill/Drain Kit & Conditioner, Frame NOT Included, Size Super Single
Rollback Vibe 12" Queen, Luxury Plush Super Cooling Gel Memory Foam Mattress $192.00 Was $214.20

Vibe 12" Queen, Luxury Plush Super Cooling Gel Memory Foam Mattress
Avenco Breezure Pocket Spring Hybrid Queen Size Mattress 12 inch Motion Isolation Mattresses in a Box,Medium Firm $132.51

Avenco Breezure Pocket Spring Hybrid Queen Size Mattress 12 inch Motion Isolation Mattresses in a Box,Medium Firm
EGOHOME Ego Snoova 8 inch Full Size Mattress, Cooling Gel Memory Foam Mattress in a Box, Medium $139.99 Was $320.00

EGOHOME Ego Snoova 8 inch Full Size Mattress, Cooling Gel Memory Foam Mattress in a Box, Medium
Sweetnight CoolNest Memory Foam Queen Size Mattress 12 inch Cooling Mattresses in a Box,Scientific Support,Medium Soft $399.99

Sweetnight CoolNest Memory Foam Queen Size Mattress 12 inch Cooling Mattresses in a Box,Scientific Support,Medium Soft
CIUANCE 12 inch Full Mattress,Cooling Gel Memory Foam Mattress in a Box,Fiberglass Free Bed for Pressure Relief & Back Pain, CertiPUR-US Certified $134.99
CIUANCE 12 inch Full Mattress,Cooling Gel Memory Foam Mattress in a Box,Fiberglass Free Bed for Pressure Relief & Back Pain, CertiPUR-US Certified
Signature Design by Ashley 12 Inch Chime Hybrid Innerspring Ultra Plush King Mattress $469.99 Was $859.99

Signature Design by Ashley 12 Inch Chime Hybrid Innerspring Ultra Plush King Mattress
Twin Mattress, 6 inch Green Tea Gel Memory Foam Mattress in a box, Medium Firmness Mattresses, Made in USA $89.99 Was $169.99

Twin Mattress, 6 inch Green Tea Gel Memory Foam Mattress in a box, Medium Firmness Mattresses, Made in USA
Leovanni 6" Gel Memory Foam Mattress, Twin - 2-Layer Design with Removable & Washable Cover, Medium Firm Support, CertiPUR-US Certified $69.99 Was $79.99

Leovanni 6" Gel Memory Foam Mattress, Twin - 2-Layer Design with Removable & Washable Cover, Medium Firm Support, CertiPUR-US Certified
Brooklyn Bedding Standard 10" Twin Firm Hybrid Mattress with Cooling Cover $138.00

Brooklyn Bedding Standard 10" Twin Firm Hybrid Mattress with Cooling Cover
Rollback Brooklyn Bedding 10" Twin Plush Memory Foam Mattress in a Box $154.00 Was $258.00

Brooklyn Bedding 10" Twin Plush Memory Foam Mattress in a Box
6V-Sermmoo Mattress California King Size 12 inch Hybrid Mattress in a Box with Memory Foam and Pocket Springs, Medium Adults $269.99

6V-Sermmoo Mattress California King Size 12 inch Hybrid Mattress in a Box with Memory Foam and Pocket Springs, Medium Adults
VQRking 14 inch king mattresses,Cooling Gel Memory Foam Mattress in a Box,Hybrid Medium Comfort,Motion Isolation&CertiPUR-US,Adult $229.99 Was $299.98

VQRking 14 inch king mattresses,Cooling Gel Memory Foam Mattress in a Box,Hybrid Medium Comfort,Motion Isolation&CertiPUR-US,Adult
Avenco Airsea 12" Queen Size Medium Firm Support Hybrid Mattress, Motion Isolation&Preesure Relif, CertiPUR-US $164.00 Was $305.16

Avenco Airsea 12" Queen Size Medium Firm Support Hybrid Mattress, Motion Isolation&Preesure Relif, CertiPUR-US
Popular in California King Mattresses in Shop Mattresses by Size - Walmart.com
FAQ
How does a California King mattress size compare to a regular King?
A California King mattress is longer but narrower than a standard King mattress. Specifically:
- California King: Approximately 72 inches wide and 84 inches long.
- Standard King: Approximately 76 inches wide and 80 inches long.
This makes the California King a great option for taller individuals who need extra legroom, while the standard King offers more width for those who prefer more space side-to-side. Choosing between them depends on your room size and sleeping preferences.
What room size works best for a California King mattress?
A California King mattress requires a spacious bedroom to fit comfortably and allow for movement around the bed. Ideally, your room should be at least 12 feet by 12 feet to accommodate the mattress and additional furniture. This size helps ensure:
- Enough space for bedside tables.
- Room to walk around without feeling cramped.
- Proper airflow and a balanced look in the room.
Smaller rooms may feel crowded with a California King, so measuring your space before purchase is recommended.
Can I use standard King sheets on a California King mattress?
Standard King sheets are generally wider but shorter than California King sheets. Since a California King mattress is longer and narrower, using King sheets might lead to:
- Sheets fitting loosely on the length.
- Potential bunching or slipping off at the foot of the bed.
For the best fit and comfort, it's advisable to use sheets specifically designed for California King mattresses to properly cover the mattress dimensions.
What types of mattresses are available in California King size?
California King mattresses come in various types to suit different comfort preferences and support needs, including:
- Memory Foam: Offers contouring support and pressure relief.
- Hybrid: Combines innerspring coils with foam layers for balanced comfort.
- Gel Memory Foam: Includes cooling gel to help regulate temperature.
- Innerspring: Traditional coil support with a bouncy feel.
Many of these options are available in a convenient mattress-in-a-box format, making delivery and setup easier.
How do I care for and maintain a California King mattress?
Proper care can extend the life of your California King mattress. Consider these tips:
- Use a mattress protector: Shields against spills, dust, and allergens.
- Rotate regularly: Rotate the mattress every 3 to 6 months to promote even wear.
- Keep it clean: Vacuum the mattress surface occasionally to remove dust and debris.
- Support properly: Use a sturdy bed frame or foundation designed for California King size to maintain mattress shape.
Following these steps helps maintain comfort and hygiene over time.









