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 shaped Tube Diameter: 2.19cm/0.86inch 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.