My 17 month old typically wears a 5, but Carter's runs a little small, so he's wearing a 6 with a little room to grow.

The design is super cute and he was so excited to wear them. He likes to pull his shoes and socks off during car rides. Since I've started letting walk around outside, I don't want him to play with his shoes. These are easy to pull off/put on so I take them off as soon as he's buckled.