Adjustable Illuminating Inline Skates with Light Up Wheels for Kids and Youth Girls Boys Inline blue.The inline skates with illuminating wheels can bring much fun for your kids. Features: Abrasion-resistant PU wheels and ABEC-7 bearing for quiet, smooth rolling on the ground. 8 wheels light up automatically when you start skating, no battery required. Push button to adjust the size to keep these skates in use for more than just a season. Small fits shoe sizes 28-33; Medium fit shoe sizes 34-37;