Travel Trac Century Fluid Trainer The faster you pedal, the harder it gets. The Travel Trac Comp Fluid Trainer uses progressive fluid resistance to give you a great workout Progressive resistance increases as you increase speed, simulating a true road-like feel. Internal disc spins in fluid for smooth, quiet and affordable performance. Fluid resistance produces progressive resistance for a smooth, quiet, road-like feel Wide, stable base provides solid performance during hard efforts Easy setup -- no assembly required Frame folds compactly for storage or transport Accommodates most road and mountain bikes.... Handlebar Tension Attachment included