13" Queen Accu-Gold 5.3 Memory Foam Celebrity RV Bed Component Sleep System Assembly required. Four separate layers of foam and removable expandable mattress pad cover. Two 4" layers of Accu-Flex Superior Support Foam for spinal alignment and transitional support. 3" layer of Accu-Gold 5.3 Visco Elastic Memory Foam for optimal comfort 2" layer of Accu-Aire 3.3 Visco Elastic Memory Foam, and a removable, washable, Expand-A-Cover 30 NIGHT SLEEP TRIAL! 20 Year Accutex Manufacturer Limited Warranty! Visco Elastic Memory Foam