Thorlos Unisex WDB Work Padded Ankle Sock 70% THORLON acrylic, 24% stretch nylon, 6% elastic Made in US 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 Cushioned arch for a better fit and less pressure on the feet for more comfort Spandex over-the-calf top holds in place all day Fiber Contents: 74% Exclusive THORLON, 21% stretch nylon, 5% spandex