American Phoenix Multi Styles Kids Bike 12-Inch 16-Inch Wheels Avaiable BMX Freestyle Bicycle With Training Wheels Steel Frame, Newest Stytle Boy's Bike and Girl's Bike Frame: steel bicycle frame;Seat: quick-release seat post for fast growing kids Gearing (# of speeds): single speed drivetrain for easy learning Brakes: coaster brake with front and rear caliper brakes Wheels/tires: training wheels included;Pedals: standard pedals Handlebars: steel handlebars;Assembly required