Please use a ruler as a guide for the size. Approximately 14cm to 16cm. I bought these new when my child was in their last year of kindergarten or first grade. My child is very particular about socks, and they stopped wearing them after only 2 or 3 wears. ❶ PUMA, unused ❷❸ PUMA, worn about 2 times ❹ PUMA, worn 2 times, shows signs of wear ❺❻ UNIQLO, plain short socks, worn about 3 times ❼ Global Work, worn about 2 times ❽ PUMA, gray, shows signs of wear - Brands: PUMA, Global Work, UNIQLO - Colors: Navy/Yellow/Gray/Black - Size: Kids' sizes - Quantity: Set of 8 pairs - Design: Logo, plain, one-point design - Type: Short socks Thank you for looking.