-Designed with 4 wheel sizes (12"/14"/16"/18") suitable for children of different ages-Equipped with a hand brake and a coaster brake (pedal backwards to stop)-The enclosed chain guard prevents kids from touching the chains-Constructed of heavy-duty carbon steel sturdy and reliable to start adventure-The pneumatic tires are suitable for various terrains providing a smooth ride-The pneumatic tires consist of 5 layers - rubber outer protective layer cord ply inner tube and buffer layer-The removab