Sizing:
Infant: 0-3 ToddlerShoe Size
Extra Small: 4-6 Toddler Shoe Size
Small: 7-10 Toddler Shoe Size
Medium: 10-13 Toddler/Kids Shoe Size
Large: 1-7 Big Kids/Womens 4-10/Mens 4-8 Shoe Siz

Sizes Infant, Extra Small, Small + Medium have logo grips on the bottom of the feet and size Large has a stitched logo on the bottom of the feet.