I have bought a pair of Acorns in every size for my son and now my daughter, throughout their lives. The sizing, I find tends to be a bit small- my son wears a 10 in regular shoes and he is perfectly comfortable in the 11-12 with room to last the season. He wears them out in the morning to the car and tromps through all types of terrain without issue. Keeps his toots warm and protected.