best price mattress 7 in. Signature Gel Memory Foam Mattress is a household essential that provides the ultimate rejuvenating sleep experience while helping you sleep fresh with its cooling gel infusion. With thousands of gel beads and a layer of ventilated foam, this mattress works to help mediate trapped body heat while increasing ventilation and generating airflow. This memory foam pressure relief system will bring you total relaxation, while providing the ultimate support in key areas throughout your body. The cooling gel memory foam and ventilated foam layers are supported by 4 in. of high-density base foam for the perfect medium firmness. These layers are then wrapped in a comfort poly jacquard cover, rolled and packaged compactly to be delivered straight to your door. All our mattresses are made with CertiPUR-US certified foams and come with a 10-year manufacturer's warranty. Color: White.