GoWith pure cotton crew socks are made of using almost 100% combed cotton (97% cotton, 3% elastane), so they make your feet comfortable throughout the day. We used only 3% elastane at the top cuff to prevent the socks sliding down. The fabric is weaved with gentle fibers that wick away moisture and keeps your feet dry. They are breathable, soft and comfortable. GoWith’s pure cotton socks' unique feature is its chemical-free fabric treatment enabling the fabric to let air pass through more effectively. Every pair sits snug and secure with our innovative circular knitting technique, which integrates a contoured heel into the design for a superior fit without any bunching. Wash on gentle cycle in warm water at 30°C/86°F. We strongly recommend line drying to prevent any defection. These pure combed cotton socks may seem to have shrunk after washing, but they'll regain their original form when you wear them again.