The Roller Derby Rocket MDX adjustable inline skates give children the flexibility of an adjustable skate while remaining a good beginner to intermediate skate. The deluxe comfort foam with reinforced ankle support with power straps offers comfort, stability, and a good fit. The reinforced polymer frame is sturdy and will allow for nice strides. ABEC 5 carbon steel bearings will offer a good glide as well. Features: Bearings: ABEC 5 Carbon Steel bearing. Lining Material: Deluxe padded comfort foam, Skate Type: Kids, Wheel Brand: Roller Derby, Wheel Configuration: 64mm - 64mm - 64mm - 64mm, Wheel Configuration: 70mm - 70mm - 70mm - 70mm, Wheel Durometer: 82A, Bearing Type: ABEC 5, Bearing Size: 608 - Standard, Frame Material: Polymer, Closure System: Laces & Strap, Special Features: Adjustable, Bearing Grade: Recreational, Ventilation: Yes, Number of Wheels: 4, Maximum Wheel Size: 70mm, Skill Range: Beginner - Advanced Intermediate, Model Year: 2013, Product ID: 215360, Shipping Exclusion: This item is only available for shipment by UPS to the lower 48 United States. APO, FPO, PO BOX, Hawaii, and Alaska shipments may not be possible for this item. (Please call prior to purchase.), Special Order: This is a Special Order item, will be shipped from the manufacturer, and is not stocked in our warehouse. This item does not qualify for our Price Matching Policy. Order processing time may vary.