Ultimate Spiderman Convertible 2-in-1 Skate, Junior Size 6-9 Safe, stable tricycle skate setup for beginners easily converts to 3 wheel inline skate for the more advanced skaters Thumb screw size adjustment with 4 position toe cap Smooth riding urethane inline skate wheels Extra cushion with printed padded liner and articulated ankle support Sturdy click adjust binding straps on instep and ankle The interior size range is 6.125" to 8.125" in length