Medium sized frame, Fully upgraded with modern drivetrain, wheels, pedals and brakes! Versatile, smooth and very dependable. This bike is ready to ride!!! Great commuter, college run-about, trainer or daily rider. We outfitted this for my so to train and compete in the famous Mount Washington Hill Climb, but his 6'4" height is too big for a medium sized frame. This bike is just fun to ride!