Adrenaline Promotions Adult Endless Summer Ribbed Surf Socks 50% Coolmax Polyester/40% Nylon/10% Lycra Spandex Made in US These cool socks are made in the USA and come with a 7 inch top cuff knit with Lycra nylon to eliminate sagging Reinforced Heels and toes extend life in high abrasion areas and are nylon plated to outside of foot sole for lasting durability Cool max ecomade plated to the inside of foot for maximum moisture Transport Mesh weave instep is lightweight and speeds drying Great technical comfort for any Sport you through at them, or just a casual trip to the beach