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California King Mattresses
The California King mattress is the longest standard mattress size available, measuring 72” wide by 84” long. BedInABox® California King mattresses take up slightly less space than standard kings, the size difference coming down to preference in length vs. width.
How big is a California king size mattress?
A California King size mattress is 72 inches wide by 84 inches long.
Who should sleep on a California King mattress?
Bed Sharing
California King mattresses give couples enough space to spread out while leaving plenty of leg room for the kids or pets to join.
Primary Suites
Since the California King provides so much space, this mattress size is ideal for larger primary bedrooms.
Tall Adults
California King beds are 84 inches long; 4 inches longer than a standard king and only slightly narrower.
Free shipping, easy returns
Try your California King mattress in a box risk-free for 120 nights. If you don’t love your new BedInABox® after sleeping on it for 60 nights, let us know and we will get the return process started. Details can be found in our Return Policy.
Safe, luxurious sleep
All BedInABox® California King size mattresses use carefully crafted BedInABox® memory foams that are CertiPUR-US® certified. This means that the foam has been tested by accredited labs and has been certified as safe to sleep on for the whole family. We use multiple layers of our house-made memory foam to provide the perfect balance of support and pressure relief, for sleepers of all ages.
Sleep now, pay later
We partner with Affirm to offer flexible financing options, so you can pay with fixed monthly payments with rates between 0-30% APR. Simply select Affirm at checkout and complete an application that won’t affect your credit score. Prequalify Now.
Buying a Foundation for a California King Size Bed
Create a more supportive sleeping experience by pairing your California King size mattress with a California King size foundation. A mattress foundation serves as a base for your mattress and generally uses solid planks or slats to support and lift your mattress off the ground. There are different types of foundations suited to different mattresses and sleep preferences, BedInABox® currently offering two options compatible with a Cal King mattress: a slatted foundation and a platform foundation.
Clever Connect™
Provides simple, slatted support for memory foam or hybrid mattresses. This sturdy foundation is available in a 5” profile or an 8” profile and can be paired with optional foundation legs for additional height.
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Platform BedInABox®
Best described as a combination of a standard mattress foundation and a decorative bed frame, our upholstered platform offers a slightly lower profile than pairing a solid foundation with a separate bed frame and is compatible with all BedInABox® mattresses.
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Which California King Size SD is right for you?
Original
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Azul®
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Dual Hybrid™
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Find your california king size mattress
Made in the USA with the most premium foams and materials, all of our
California King mattresses are backed by a
20-year limited warranty so you can rest easy, night after night.
Shop Mattresses
Shop Mattresses
Find your california king size mattress
Made in the USA with the most premium foams and materials, all of our
California King mattresses are backed by a
20-year limited warranty so you can rest easy, night after night.
Shop Mattresses
Shop Mattresses
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