•Adjustable Sizing 5-8 •64 mm high rebound indoor/outdoor wheels for smooth ride •Abec-5 bearings for speed •Locking Buckles Your little one will love skating fun wearing these youth, boys inline skates by Airwalk. With aluminum frames and hard plastic shells - they are sturdy enough to take on daily skating. The skate uppers are made of linen and lined with nylon. Airwalk inline skates have 4 cast urethane wheels for smooth, gliding action. With buckle closures and adjustable fit, they will stay put securely on her feet. They have heel brakes to allow safe stopping. Ages 5 and up. Weight: 2.5 Pounds Material: Aluminum (Frame) Closure Type: Buckle Features: Adjustable Fit, Adjustable Size Suggested Age: 5 Years and Up Number of Wheels: 4 Wheel Material: Polyurethane Brake System: Heel Brakes Wheel durometer: 95A Bearing Type: ABEC-5 Shoe Width: Medium Wheel Color: Black Wheel Diameter: 64 Millimeter Material: Boot: Nylon