The Broyhill Faversham sapphire cooling gel memory foam hybrid innerspring plush mattress uses technology to offer high quality support while maintaining a cool and comfortable sleeping experience. Resting on top of a high density .5" support foam layer is an 8" Natural Spring Support System consisting of individually fabric wrapped spiral steel springs which gently flex and yield to offer support for your body's unique pressure points and isolate motion to reduce disturbances to and from your partner. An edge plus perimeter layout encases the entire perimeter of the mattress to increase the usable sleep surface by nearly 20%. Contouring support added with .5" engineered latex foam combined with 1.5" MicroTec Gel foam layer; offers additional targeted support and the ability to sleep cooler with 1" contouring quilted cover including a breathable, plush foam sewn into it for extra soft and cradling support. Mattress is usable upon unboxing, adjustable base friendly (foundation sold separately), and comes with a limited 10 year manufacturer warranty.