Variflex Vapor Boy's Adjustable Inline Skate, Size 5-8, Blue Boot: size 5-8, Lightweight polymer boot with patented auto-adjust system allows the skate to grow with the foot, The boot easily adjusts to 4 different sizes without the use of any tools Chassis: Impact resistant polymer Wheels: 64 mm X 24 mm PVC Bearings: ABEC-1 bearings, Brake: single removable brake The closure is a one safety buckle system with hide away strap, power strap and lace system