Slumber Solutions Choose Your Comfort 12-inch Full-size Gel Memory Foam Mattress Eliminates motion transfer and uncomfortable pressure points Soft: 3.1-inches of plush gel memory foam, 3.1-inches of plush polyurethane foam, 6-inches of supportive base foam. Medium : 3.1-inches of medium gel memory foam, 3.1-inches of medium polyurethane foam, 6-inches of supportive base foam. Firm: 3.1-inches of firm gel memory foam, 3.1-inches of firm polyurethane foam, 6-inches of supportive base foam Density: 3-inches of 3.51-pound gel memory foam, 3-inches of 1.81 pound polyurethane foam, 6-inches of 1.81-pound base foam. Memory foam is naturally dust mite resistant and hypoallergenic Can be used with any conventional box spring or platform foundation. Dimensions: 54.1 inches wide x 75 inches long This mattress meets all the requirements of the federally mandated regulations regulated by the Consumer Products Safety Commission, Part 16, CFR 1632 and 1633. Meets all flammability standards. Care instructions: Spot clean