Thorlos Experia Women's XCCU Multi-Sport Thin Padded Low Cut Sock 65% Thor-Wick COOL polyester, 20% Nylon, 14% polyester, 1% Elastic Made in US No Closure closure Turn Inside Out / Machine Wash / Use Liquid Fabric Softner Style: XCCU / Padding Level: Sculpted Thin Cushion Runners World Gear Award Winnercalled the best of both worlds Guarantee - Your feet will feel better or your money back! Proudly MADE in the USA | North Carolina Fiber Content: 62% THORWICK COOL polyester, 21% polyester, 16% nylon, 1% elastic