● 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 removable training wheels help kids learn to balance and ride independently● With adjustable handlebar height and adjustable saddle height provide personalized comfort● The bike arrives 95% pre-assembled simplify the assembly process● Designed with a convenient bell add an exciting element to every ride● The mudguard prevents mud from splashing on the bike or the rider