Accepted by the American Podiatric Medical Association (APMA) Easy-on, easy-off design; Unique fan-shape toe box resembles the shape of the child's feet Ultra-flexible rubber soles with deep tread pattern increases slip-resistance Genuine leather insole provides a soft layer to protect foot from excess pressure U.S.A. trademarked brand. Designed and Manufactured by Momo Baby USA Kimi + Kai sneakers feature an ultra-flexible rubber sole and easy-on, easy-off design. The flexibility of the sole allows the natural shift of weight from the back to the front of the shoe when walking so the foot can further develop muscle strength and balance. Our unique fan-shape toe box resembles the shape of the child's feet, allowing the big and small toes to move freely.