This 24-inch mountain bike for teenagers features a durable high carbon steel frame and reliable disc brakes for safety. Designed with stylish brown-edge tires for traction and a modern look, it is built to last for daily commutes and outdoor rides. | Anysun | | 24" Mountain Bike for Teens | High Carbon Steel Frame, Disc Brakes, Durable Brown Edge Tires for School Commuting | Green | Best Buy