Medium Firm Memory Foam 12 in. Mattress, Double-sided MattressIf you want the best mattress, then our gel memory foam mattress is the one for you. The main reason this 12 in. gel memory foam mattress is so comfortable to sleep on is that 12 in. ventilated foam mattress is made of high density materials with a unique three layers contouring structure. It allows you to get the best quality sleep in the most comfortable state possible. And it achieves support in different strength areas without compromising