This 12-in kids bike is set up for ages 3 to 4 with riders 31.5 in to 41.5 in tall and a seat rated to 110 lb Both a hand brake and a rear coaster brake are fitted so a beginner can stop whichever way feels natural. The seat rises from 17.5 in to 21.5 in and the handlebar moves with it as legs grow. Training wheels keep the bike upright at first and a removable basket carries a doll or snack on driveway laps. Pneumatic tires smooth out sidewalk cracks and an enclosed chain guard shields the drivetrain. Arrives 85 percent pre-assembled and CPSIA certified.