While these socks are very cute, don't assume that the size refers in any way to age. A size 10-12 in Gymboree sizing fits a 6-7 year old. I bought socks from a major retailer in a size 9-11 the same day, they fit shoe size 4-10 in big boys. These socks were a final sale item, plus the nearest Children's Place is 50 miles away, so I am stuck with them.