Our 8-inch single mattress is designed with a two-layer full foam system with a top layer of 4cm gel memory foam that is naturally antimicrobial and resistant to allergens, mold, bacteria, and dust mites, and 16cm sturdy support foam to ensure great comfort and more durability. The gel memory foam provides a better contour to the shape of your body, allowing optimal relaxation for a deeper, longer, and sweeter sleep.