Nature's best - the shell of this comforter combines GOTS Certified organic cotton grown from non-genetically engineered seed and without toxic pesticides and synthetic fertilizers, and Tencel lyocell - a natural and renewable fiber made from wood pulp cellulose. Nothing breathes as well as 100 pure velvet, and Tencel Lyocell has a silky, sensuous surface and moisture-wicking qualities. This comforter provides superior comfort and a great night's sleep to environmentally conscious users.50 Certified Organic Cotton/50