Polyurethane sole Our basketball shoes are on the small side. We recommend buying one size larger. The outsole of the basketball shoe is designed with durable non-slip texture to maximize the grip on the smooth and flexible sole, and can bend freely. Comfort flat Shoes design with padded back collar to prevent heel friction and padded tongue to add comfort. Gifts for teen boys and men and suitable for walking,running,gym,,indoor,athletic sports,outdoor,footwear etc. Size guide. We'd recommend you can choose fit shoes according to the length of your feet.