The Kleen-Machine is superior in all aspects of Robotic technology! The Kleen-Machine is a sophisticated "Floor Specific" Robotic pool cleaner. Its unique design was engineered to vacuum and brush pool floors of any surface type (vinyl, concrete, fiberglass), fast and efficiently. Unlike other heavy and clumsy Robotic cleaners, our patented lightweight design makes the Kleen-Machine the most user friendly cleaner available today.