This 12" thick mattress has a plush top and provides medium firmness and a breathable, moisture-wicking design to help keep you cool while sleeping. Four separate layers consist of gel memory foam and coils, and it comes with a polyester cover to retain mattress freshness. It also features edge support to ensure you can sleep on any spot without the mattress sagging. Compatible with an adjustable base (frame and box spring sold separately), it arrives at your doorstep packed in a box and ready for you to unfold and decompress.