For a performance fit that still lets their feet rest naturally and can grow with them, we outfit our toddling sender with Mad Rock's Mad Monkey III Climbing Shoe. Equipped with adjustable heel and instep volumes and an arch insert, this pair can give their feet a second-skin fit, while the neutral profile and high-volume last ensure their developing feet don't grow into croissants. As they climb, the slight asymmetry helps with their aim and the grippy, hardwearing rubber helps them stick to the wall.