This rear seat from Polisport is ideal for carrying your child on the back of your bike. The seat grows with your child through the height-adjustable safety harness and height-adjustable footrests. With the increased side protection, 3-point harness and extra large foot protection, your child is always safe in this seat. Specifications: Color: dark gray Material: plastic Type of seat: rear Mounting: luggage carrier Width luggage carrier: 120-175 mm Tube diameter: 10-16 mm Weight capacity: 9-22 kg Age: 9 months - 5 years