Korkers DeYoung I-Drain Neoprene Guard Socks 96351-FA6401 Abrasion-resistant form-fit 3.5mm neoprene, complete with gravel guards and a patent-pending perforated footbed to drain away unwanted foot stew. Perfect for walk and wade trips on hot, summer days. This collaboration with artist Derek DeYoung brings his unique artwork to life on Korkers footwear products. Features 3.5mm neoprene upper with perforated Airprene underfoot Korkers DeYoung I-Drain Neoprene Guard Socks