They fit the feet of a eleven year old boy who wears size 5 1/2. He is 5 feet tall and weighs 85 lbs if that helps. Never has he ever said anything about socks, never thought he noticed. But he did tell me he loves them and said they are comfortable and thick. I’d buy them again.I love these socks because of their durability and less likely to get holesWould buy again, Great quality for the price!Good quality, not paper thin. My son loves them. He’s on the smaller end of the large size, but they aren’t overly big, just a bit past his heel. He hasn’t complained at all.The socks are a great fit. However the packaging is so “well” done that it put a hole in 2 socks trying to get them undone.Fit because of stretchy material but won’t for long…I was looking for a thin, comfortable sock for my son who always complains that his socks make his shoes "squeeze". He told me he loves these and they're so soft. WIN!It's good for winter. My son said perfect when he first put them on. His shoes size is 12. Hope this info help you choose the right socks.