This is my son's second pair of these. He had the smallest size in gray and he outgrew them. He is 15 months and wears a 5 1/2 -6 in shoes. I got him the 12 to 18 months in these and they are just a little long but he can walk in them just fine and it gives him a bit to grow and wear socks if needed. He is very tall for his age and a bit wobbly when walking so regular shoes are a bit hard for him to balance in. These shoes are great because they are flexible and he doesn't slip on our hardwoods in them. The color in the gray and brown are nice colors.