PURE COMFORT, DYNAMIC STYLE The Nike Solarsoft 2 (1y-7y) Boys' Flip Flop features vibrant colors and soft, pliable foam cushioning for a vibrant look and soft ride. Benefits Soft, injected thermoplastic rubber upper for style and durability Nike Solarsoft foam midsole with grooves for airflow and drainage Outsole made with Nike Solarsoft foam in a harder durometer for better durability and traction