Product details Outlook &Dimension: Material:Carbon structural steel Packing size:57.87*11.02*34.45in Expanded size: 69.29*27.17*44.09in Wheel size: 20 inchesSpecifications: Weight: gross weight: 50 kg(110.23 lb), net weight: 41 kg(90.39 lb Maximum load: 120kg(264.56lb) Top speed: 20mph(full bat