Puretreeⓡ 100% organic shredded natural latex pillow with organic cotton cover. Pure treeⓡ pillows are stuffed with pure treeⓡ fill, a special blend of high-quality gols certified organic natural latex, made from sap tapped from para rubber trees. Organic natural latex fill is not all the same--as different companies have different recipes, baking process, and produce different density of latex. After extensive research, pure treeⓡ fill is what we believe as the best, most comfortable fill for sleeping.the 100% organic cotton zippered inner case is designed so customers can adjust the amount of fill to their loft preference. The 100% organic cotton material for the outer casing is specially picked for its smoothness, luxurious feel, and super comfortable to the touch.