The Nike Flex Runner 2 is designed for children who are taking their first steps and are always on the move. Without laces, they ensure a stable and snug fit thanks to the lined interior, external leather overlays and elastic at the top. Straps on the medial area and heel help to put the shoe on easily. The upper is made of breathable synthetic fabric, with reinforcement on the toe. The foam sole is grooved for a lighter, more natural stride.