Experience unparalleled comfort and cooling with the Revive Optima Chill Medium Memory Foam 13" California King Split Mattress. Designed in a sleek grey color, this mattress combines advanced materials to ensure a restful night's sleep. The cover is crafted from a blend of polyethylene, polyester, and graphene cooling double jacquard, while the mattress itself features multiple layers of memory foam and support foam for optimal comfort and support.