Deo-Fresh Black: Keeps your feet and shoes fresh. Go sockless if you want to because deo-fresh-black is hand washable/air dry. Deo-fresh-black is made of pure, soft, cotton terry and durable, natural sisal fibers that are safe for prolonged contact with bare skin. Deo-fresh is stitched around the edges for increased durability. Sisal has been used for centuries to make rope on ships. This makes deo-fresh-black ideal for boating, cruising, warm weather travel, tennis, walking-you name it. With deo-fresh-black your feet and shoes stay cool and comfortable.