KUKOME Adjustable Inline Skates 82A PU Cast Wheels, diameter 70mm/72mm. The speed of the skate is perfect. They are not to slow or to fast. Great skates for a beginner. High quality skates, 4 Size, adjustable so as the children feet grow, can last your child more years, the adjustment factor couldn't be easier, no screws or disassembling to do it, just a simple button and pull to correct size. ABEC -5 Bearings, Aluminum hangers and Half soft uppers Vamp, More Durable. Sizes Available: 11-13, 13-2, 1-3.5, 3-5 (please check the below size chart to choose the best fit size ) Perfect for Indoors and Outdoors