Brooklyn Bedding 12" Harper Hybrid Gel Memory Foam Mattress in a Box, Cal King

12 inch: Constructed with a base pad that adds durability and longevity to the mattress, an 8" encased coil unit, a 3" layer of transition layer foam, a .75” cooling layer of gel infused pressure relieving comfort foam, and a .75” layer of high density foam. Designed to transform your sleep, this medium-firm mattress combines advanced cooling technology with exceptional edge support, creating the perfect balance of relaxation and stability. The mattress is made to order, compressed and rolled, and shipped in a box for an easy and convenient setup Selection of height preference (8", 10", 12", 14") with a medium firm comfort feel and gel memory foam that contours to your body