The Rollerblade(R) Boys' Microblade Adjustable Inline Skates offer a great fit for your beginner skater. These skates adjust with his growing feet with the push of a button and expand to 4 full sizes. With a comfortable liner, smooth rolling wheels, and a strong upper shell, he'll enjoy skating with the Microblade Inline Skates. FEATURES: 4 Adjustable sizes with a simple push of a button Offer a comfortable fit as your child's feet grow Durable shell construction provides proper balance, control and support Padded liner enhances comfort and breathability Hook and loop strap with ratchet bucket and laces for a secure fit Wheels roll smoothly while offering the right amount of speed Rear brake for easy stops Wheels: 72mm/80A Bearings: SG3 Manufacturer's warranty: 180 days