Easy Rest Gel Lux 10" Gel Memory Foam Mattress (King) 4 Layers Combined for Extreme Comfort and Support/Gel Will Dissipate Heat Middle Layers Provide for Proper Comfort and Support w/ High Resilient 2 lb Base Foam 550 GSM Fabric all way stretch knit fabric Zip off Anti-microbial, Anti-dust mite, Washable Cover & No Motion Transfer 1" Gel Ventilated Air Holes; 2" of 3 lb. Memory Foam; 2" of Comfort Foam; 5" High Resilient 2 lb Base Foam