Your feet will be happier in the SockGuy El Dia Crew 6IN Cycling Sock. The El Dia is made of a supportive, comfortable, and fast-drying Micro Denier nylon/spandex fabric and boast double-stitched toes and heels for excellent durability. 75% moisture wicking micro denier acrylic, 15% nylon, 10% spandex for exceptional comfort and strength Mesh upper above your foot allows maximum ventilation and breathability Easy fit cuff features a non-binding cuff Stretch-to-fit, 2 size system Warm weather sock