Specifications: Headset Slot Diameter: 1 3/4"""" (4.5 cm)- Overall Dimension(LxWxH): 30 5/16"" x 16 9/16"" x 33 11/16"" (77 x 42 x 85.5 cm)- Weight Capacity: 300 Lbs (136 kg)- Fits People Height Range: 4'6"" to 6'6"" (137.16 to 198.12 cm)- Knee Pad Size(LxWxH): 13 3/4"" x 6 11/16"" x 2 3/8"" (35 x 17 x 6 cm)- Knee Pad Adjusted Height Range: 17 11/16"" to 22 7/16"" (45 to 57 cm)- Handlebar Adjusted Height Range: 33 11/16"" to 44 9/16"" (85.5 to 105.5 cm)- Basket Size(LxWxH): 10 5/8"" x 7 7/8"" x 9 7/16"" (27 x 20 x 24 cm)- Wheel Diameter: 7 1/2"" (19 cm)- Front Wheel Width: 16 9/16"" (42 cm),Rear Wheel Width: 9 1/4"" (23.5 cm)- Stopping: Rear on-wheel Brakes- Material: Metal, Plastic, Pvc- Net Weight: 26 Lbs (11.8 kg). Package Contents:- 1x Knee Walker- 1x Basket- 1x Manual. Notice: - Before using, rotate the left handle to loosen the brake from the wheel. - When not using, readjust the left handle to ""H"" in order to let the brake stick to the wheel and prevent the product from slipping