Temperature regulation: Cool Blue gel memory foam helps dissipate heat for a cooler night's sleep. Pressure relief: 8mm memory foam layer contours to your body to reduce pressure points. Hypoallergenic: Quilted cover and materials designed to resist dust mites and allergens. Hybrid comfort: Gel memory foam and open-coil springs combine for optimal support and pressure relief. Durable springs: Features a long-life 13.5-gauge open coil spring system for lasting support. Choice of sizes: Available in Small Single, Single, Small Double, Double, King and Super King.