Product Features ACCURATE SIZING: TCK Sock Size: Small - Youth Shoe Size 12-5, Medium - Womens Shoe Size 5-10 Mens Shoe Size 5-9, Large - Womens Shoe Size 10-13 Mens Shoe Size 9-12, X-Large Womens Shoe Size 13+ Mens Shoe Size 12+ Crew Length, Made in the USA Arch Compression and Heel/Toe Construction, Moisture/Odor Control, Blister Control, Breathable Mesh, Ergonomic Cushioning Ideal for Basketball, Baseball, Volleyball, Lacrosse, Softball, Football in youth, teen, and adult sizes Fiber Contents: 77% Polypropylene, 17% Nylon, 03% Elastic, 03% Lycra Spandex Product Description Looking for a different look this year? TCK Sports Heathered Crew Socks, high performance athletic socks for all team sports and elite athletes. Shoe Size: Small - Youth 12-5 Womens 4-7, Medium - Womens 7-10 Mens 6-9, Large - Womens 10-13 Mens 9-12, X-Large Womens 13+ Mens 12+.