Our 9” Essential mattress is a simpler take on our Original Mattress, utilizing the same dual layer memory foam technology in a slightly thinner, medium-firm mattress profile.Shop Now
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?
California King mattresses give couples enough space to spread out while leaving plenty of leg room for the kids or pets to join.
Since the California King provides so much space, this mattress size is ideal for larger primary bedrooms.
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.