Specification Color: Orange Material: Aluminum Alloy, PVC, Rubber Surface Treatment: Chromium Plating Process Assembly Required: Yes Number of Wheels: 2 Max Load Capacity: 159kg/350.5lbs U-shaped Tube Diameter: 2.19cm/0.86inch V-Wheel Diameter: 12cm/4.72inch Backrest Size: 44*46cm/17.32*18.11inch Seat Size: 44*48cm/17.32*18.89inch Retractable Handles Adjustment Length: 64.5-96cm/25.39-37.79inch Gross weight: 10.05kg/22.15lbs Net Weight: 7.8kg/17.19lbs Expanded Size: 101*52*93cm/39.76*20.47*36.61inch Folded Size: 92*52*16cm/36.22*20.47*6.29inch Package Size: 79*54.5*17cm/31.1*21.45*6.69inch Package Included 1*Stair Chair 2*Wheels 2*Restraining Straps 2*Foldable Handles.