JOYSTAR's sleek and robust HI-TEN steel frame can withstand numerous knocks with ease.Kids cycling can be well protected by the full cover chain guard and 1-piece crank of the single speed drivetrain, which has a steel chainring. Training wheels have enhanced durability to help keep your child upright while learning to ride, thanks to their heavy-duty steel brackets. This additional assistance will aid them as they become proficient on 2 wheels.