Nike Sonic Fly Little Kids' Running Shoes Fuel their need for speed in the Nike Sonic Fly. Designed for fast runners in the making, it pairs a lightweight design with soft, springy foam that helps add energy to every stride. Responsive Cushioning We packed the midsole with soft and springy foam that absorbs impact and adds energy to your kiddo's every stride. Lightweight But Durable Less weight means more speed. Mesh throughout the upper helps keep these shoes lightweight and breathable. We reinforced the toe and sides for added durability. Support They Can Feel A stretchy band under the laces helps add stability and containment. Rubber outsole with Waffle-inspired tread pattern helps provide durable traction. Elastic laces and a hook-and-loop strap make these shoes easy to take on and off.