1. Adjustable sizes: One button to adjust different sizes. You no longer have to worry about the growing foot of your children. The adjustable roller skates grow with your children and can be adjusted to the current shoe size in a few simple steps. 2. Safety guarantee: the tightfitting Velcro closure and highstrength buckle ensure that the adjustable inline skates fit your feet. The full aluminium frame structure of the inline skates blades can protect your feet when you lose balance. 3. Robust and highquality PVC wheels: the robust PU wheels (54 mm x 32 mm) provide additional durability. Highperformance ABEC7 bearings ensure a good and comfortable ride. The wheels are adapted to the wonderful design of the shoes. 4. Light up wheels: inline skates for boys and girls with 8 PU light up wheels give brilliant colours when gliding. Let yourself be transformed into the bright landscape on the beautiful night.