Schwinn bikes are designed with high-quality materials and parts that withstand institutional use, making them a perfect option for PE classes and after-school programs. With 29" dia wheels, this bike is ideal for students in fourth grade and up. The steel frame keeps the bike lightweight; while a linear-pull front and rear disc brakes allow for responsive stopping. Handlebars include twist shifters to easily change gears to one of the 21 speeds. Colors may vary.