1.10inch training bike 2.Steel frame, 3. Steel handle bar and fork 4.EVA tires 5.Rear V Brake Frame12inch steel,painted,TIG welding,1.2mmForksteel,painted,TIG welding,1.2mm Handlebarsteel,paintedGripPVCTireEVASaddlePVC leatherBrakeRear V BrakeThe first bike for children learning riding. 12inch cool training bike