I bought this belt for my son to wear with his school uniform. He wears size 5 or 5t pants around his waist. He is very thin and tall. The little one just fits him on the first belt loop when he buckles up. I won't be returning as I don't want him to wear too many belts as this is his first time wearing a belt alone. This belt also has very good stretch, making it easy for him to pull his pants down with his belt fastened in an emergency.