The Organic Cotton Quilted Deluxe features comfortable support and a luxurious finish. Offers a more natural, healthy and comfortable sleep environment in a two-sided, flippable design. Made with luxuriously quilted organic cotton fabric for a more mature mattress feel. Features a luxuriously quilted organic cotton fabric for a more mature mattress feel. Please note that this side is not waterproof and would require a Waterproof Organic Protector Pad for full waterproof and dust-mite protection. Organic cotton is the purest form of cotton and a healthier alternative to synthetic fabrics and foams. Naturepedic uses only U.S. grown and certified organic cotton as filling for its mattresses and buys directly from USDA certified sources. This increases purity, organic reliability and support for U.S. farmers. Features a premium 14.5 gauge steel coil innerspring with alternating coil directions. This provides a strong stable feel that is both comfortable and supportive. 6 gauge border wire adds heavy duty edge support for long lasting durability. Twin: 360 Coils. Full: 528 Coils.