Deo-Fresh blue 1 pair: keeps your feet and shoes fresh. Go sockless! if you want to because Deo-Fresh-BLUE is hand washable. Deo-Fresh-BLUE is made of pure, soft, cotton terry with anti-bacterial silver and durable, natural, airy sisal fibers. Sisal has been used for centuries to make rope on ships. With all natural, hand washable Deo-Fresh-BLUE your feet and shoes stay cool, clean and comfortable. Deo-Fresh-BLUE is ideal for boating, cruising, warm weather travel, tennis, walking-you name it.