Material: plastic and aluminum Product weight: 1 kg Wheel: PU with light Special feature: Aluminum chassis, adjustable size with training wheels. Set Includes: Knee Pads & Arm Protection set, helmet and in ine skate shoes Sizes: Small: 31 To 34, Age Group: 4-5 Years Approx Medium: 35 To 38 Age Group: 6 7 Approx Large: 39 To 42 Age Group: 7 9 Years Approx colors: blue - red - pink