THE FUTON SHOP 8" NATURAL ORGANIC DOUBLE SIZE COTTON MATTRESS CHEMICAL FREE 100% Natural Organic Staple Cotton Chemical free, organically grown. 45-110 lbs (depending on size) of Firm Natural Support. Eco-Friendly Natural bedding. Grown in America. Comes with standard poly cotton case. Color of the fabric for mattress casing may vary depending on fabrics in stock.