These cool roller skates from Roces are guaranteed to provide hours of skating fun. The roller skates are adjustable in size from size 34 to size 37. The inner shoe has a comfortable lining and special insole for children. Secure the roller skates with the lacing, high quick release and Velcro strap across the instep for maximum support. Because the wheels are made of PU material, the skates will last a long time and the soft stopper made of polyurethane for gentle braking. Specifications: Color: black/blue Material outer shoe: polypropylene Material shoe lining: foam Material wheels: PU Diameter wheels: 54 mm Wheel hardness: 85A Ball Bearings: ABEC 5 Gender: boys Age: from 7 to 10 years (average) Size: 34-37