Set configuration: a pair of shoes, a small wrench, high density foam helmet, 6 pieces of protective gear (including 2 knee pads, 2 elbow rests, 2 palm rests), a pair of screws, a pair of wings, and 3 obstacles. Size S. Fits feet from 17 to 20.3 cm Size M is suitable for feet from 20.3 to 23.3 cm Size L fits feet from 23.3 to 26 cm Size S. Fits feet from 17 to 20.3 cm Size M is suitable for feet from 20.3 to 23.3 cm Size L fits feet from 23.3 to 26 cm Material: Textured surface, soft surface breathable composite material (sandwich mesh for increased breathability), Easy to protect feet; Bracket: composite structure two-piece aluminum alloy Racket, good pressure resistance; Size: Adjustable Shoe shell: novel style, new material, good toughness Glossy, wear-resistant, impact-resistant, not damaged; Wheel: PVC fruit wheel perfusion wheel, Brakes: Design wear-resistant brakes; Buckle: Designed with a fast and secure buckle system; Reinforced shoulder straps.