Valdler Mens Checkered Print Cotton Calf Socks Pack of 5 With Gift Box 75% Cotton/15% polyester/10% spandex Size: Free size (fit the most for EU 39-44 /US 6-9). Material:75% cotton, 15% polyester, 10% spandex. Machine Washable. Breathable, sweat-absorbent. Mid Calf Length.