The Roller Derby(R) Boys' Firestar Roller Skates are great for fun and exercise. The comfort sport design gives feet a good cushion and the Velcro(R) power strap securely holds the foot for all day skating. With Excellarator bearings and a durable lightweight frame, he will skate smoothly and confidently out on the rink. FEATURES: Boys' roller skates Comfort sport design Lightweight torsion beam frame Padded collar offers comfort and support Velcro(R) Power strap and laces for a secure fit Chassis: Torsion Beam Wheels: 54mm Urethane Bearings: Excellarator 608ZB Manufacturer's warranty: 90 days