Teko Men's EVAPOR8 Light Low Cross Training, Cycling and Running Socks, Carbon/Firefly, X-Large 76% EVAPOR8/21% Nylon/3% Elastic Made in the USA and Imported Anatomical design for a smooth seamless and snug fit Ultra light EVAPOR8 consists of polyester and polyamide fiber made from 100% recycled materials Luxurious ultrafine EVAPOR8 fiber is softer and more comfortable Ideal for hot/humid conditions evaporates moisture quickly and regulates your temperature Extremely durable Anatomical design for a smooth seamless and snug fit