Thorlos Unisex KAMX Athletic Thick Padded Ankle Sock, White, Large 84% Thor-Lon acrylic, 12% nylon, 4% spandex Turn Inside Out-Machine Wash-Use Liquid Fabric Softner Padding Level: Moderate Cushion Key Benefit: Maximum Protection = Maximum Comfort Guarantee - Your feet will feel better or your money back! Proudly MADE in the USA | North Carolina Thorlos clinically-tested padding under the ball and heel provides maximum protection from friction, the primary cause of blisters, and impact protection where needed most Constructed with THORLON fibers for superior softness, resilience, durability, and moisture-wicking for drier, better feeling feet Cushioning over the toes to help protect against runners toe (black toe) Flat knit instep and cushioning in arch for better fit, more support and less pressure on the feet for a more comfortable run Fiber Contents: 84% Exclusive THORLON acrylic, 12% nylon, 4% spandex