My almost 6 yr old is learning to skateboard and these fit okay on the very tightest parts of the velcro, but definately not comfortable for her because they don't stay on. Someone said their 3 yr old was fine with these, which I why I bought them (figuring they'd be fine for my kiddo who's a lot older!) and average size... I think the 3 yr old must be a very LARGE 3 yr old because there's absolutely no way they'd stay on a normal sized 3 yr old - they're huge on my 6 yr old.