Mantis Flipside Boy's BMX Bike, 12-16-20 inch Frame/Fork: 8 inch steel juvenile frame with steel fork Wheels/Tires: Reinforced plastic rim with BMX EVA flat free tire Drivetrain: Single speed freewheel, one piece crank Brakes/Cockpit:Direct drive brake, padded handlebar and stem, comfortable saddle Includes: Chainguard, training wheels, reflectors