This gel memory foam mattress includes 3 inches of gel memory foam and 11 inches of high density base support foam for ultimate comfort. The gel memory foam offers complete, luxurious and stress-free support, keeping you cool during sleep and reducing pressure points. The medium cushion-firm feel is slightly plusher than a traditional firm mattress. The mattress features a soft, washable cover and is easy to set up, fitting all kinds of bed frames. It is recommended to air out and reshape the mattress for 72 hours after unpacking.