Thorlos Experia Thin Padded Running Ankle Sock 62% Cool Max, 21% polyester, 16% nylon, 1% elastic Made in US Care Instructions: For longest product life and maximum comfort, wash and dry inside out (to fluff up the padding) using liquid fabric softener after each use (to condition the fibers for longer life) 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