LIGHTWEIGHT AND FLEXIBLE. The Nike Flex Runner has a stretchy slip-on design that is easy to take on and off. Leather on the sides gives structure and support. The sole's soft, durable foam is flexible for little feet as they grow. Stretchy fabric has leather on the sides for structure and support. Slip-on style has elastic straps for a secure fit. Soft foam cushions little feet.
Upper - Textile, Lining and Sock - Textile, Sole - Other Materials.