Weve been buying keens kids shoes since 2013 when my oldest started walking. I always bought her the Newport sandals and continue to do so but my almost 3 year old son moves better in lighter weight shoes so I decided to give these a try. He wears a 9 in Stride Rite and See Kai Run with almost no room to spare. The size 9 keens had a full finger of room to grow so Im glad I didn't size up like I always do with this brand. Shoes are great but I wish the ankle strap was sturdier like the Newports.