Serta 12-Inch Gel-Memory Foam Mattress With 20-Year Warranty, Full 12-Inch gel memory foam mattress with deluxe cover Serta exclusive 3-layer construction; 2-1/2-Inch of gel memory foam for added comfort and support; 2-1/2-Inch air-channel support foam for additional customization and additional airflow; 7-Inch base of high density support foam for added firmness and support Our revolutionary gel memory foam is made with our exclusive open cell memory foam and gel support beads; Serta gel memory foam is designed to provide custom support where you need it most and a cooler sleep surface A revolutionary advance in sleep technology; provides a deeply restful sleep that relaxes, refreshes and rejuvenates; made in the USA; spot clean only