80% cotton RCR / TOEZ anti-slip sole is ergonomically designed to your foot and guarantees a firm grip, which allows you to push yourself when it really matters. Regular socks trap moisture and can?? breathe, but not ours. Just because you sweat doesn?? mean you can?? stay fresh Five toes construction allows toes to move and spread naturally while improving stability, comfort and safety. Double stitched, black grip soles on black fabric designed to prevent visible signs of wear and promote longevity, so you can wear them with confidence. Care Instructions: Machine washable, wash inside out on gentle cycle and lay flat to dry. No bleach or iron.