Gel Tech Venus 14 inch Plush Gel Memory Foam Mattress 100% US Made (Twin) Comfort layers 3.5 Halcyon Micro Air Foam (Halcyon Micro Air Foam is more supportive then any foam on the market and is a pressure sensitive foam) 2.0 Eco Flex layer made up of 1.0 soft foam and 1.0 medium foam 1.5 Medium Firm Eco Flex Cover 1.50 Gel Infused Memory foam quilted into the cover (extra cooling and support) Support core 5.5 high density Eco Flex support core 14 inch Plush mattress