Serta - Perfect Sleeper Cobalt Calm 13.25" Plush Tight Top Mattress - King - 500106062-1060Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist Gel Memory Foam that contours to your body. Features: Plush Tight Top A simple solution for perfect sleep, every night Designed with zoned comfort for a more restful sleep Cool Twist Gel Foam Cool Twist Gel Memory Foam PillowSoft Aire CertiPUR Designed and Built in USA Adjustable Base Compatible 10 Year Warranty Specifications Unit Of