Designed for Beach Volleyball, Sand Soccer, and beach sports Protect feet from hot, cold, or rocky sand Neoprene heel and toe protect feet from blisters Breathable Spandex uppers Lightweight and quick to dry Sizing (Based on US Shoe Size): XXS Women 1-3 Men 1-2 XS Women 3½-6 Men 2½-4 S Women 6½-8½ Men 4½-6½ M Women 9-11½ Men 7-10 L Women 12-14 Men 10½-12SAND SOCKS®, invented by Vincere Sports in 1994, were the first and continue to be the best. Our improvements over time result in the next generation in outdoor sportswear. SAND SOCKS® provide performance and protection for today’s beach and water sports athletes. - Improve balance and feel, while protecting feet from the elements - 3mm thick neoprene Action Flex Soles protect against heat, cold, sharp objects, and dirt - Stretchable Duratex coating on sole gives strength with a comfortable elastic fit - Lightweight, cool, and breathable Spandex uppers let feet breathe during workouts - Keep out sand, mud, dirt, and sun with UV protection - Protective neoprene toe and heel for injury prevention - Reinforced Flat-lock Stitching for long-lasting use - Adjustable Fastener for a secure fit every time - Wear in or out of shoes or sandals