Nufoot Betsy Lou style has the same adorable strap detail like the Mary Jane and more fitted than the ballet flat slipper. Nufoot is reinventing indoor , where comfort and style coexist to make for happier feet. Made with the latest sports technology, Nufoot is water-resistant, germ-proof, and super comfortable as the skid-resistant soles gives you a good grip on any indoor surface. Perfect for all your child's indoor activities. Size x-small fits a youth size Y1 to Y3 shoe size. Machine washable and air dries quickly.