Frame: Made of premium magnesium alloy, molded in one body.
Wheels: Upten special design magnesium alloy wheels, molded in one body wheelset.
Full chain guard – Prevent your boy from touching the chain and getting hurt or soiled.
Handlebar: magnesium alloy handlebar.
Training wheels and a quick-release Seatpost make it is easy to adjust the height of the seat.
How to choose the size：