Sunny Health & Fitness Asuna 5150 Magnetic Turbo Commercial Indoor Cycling Bike Micro adjustable magnetic resistance with press down braking System Heavy duty Commercial grade steel frame and crank with dual action click and caged pedals Chain drive mechanism for smooth and quiet workouts with a 37.5 lb Cast steel and aluminum flywheel Fully adjustable fore/aft and up/down seat with a height adjustable handlebar Easy-to-reach water bottle holder, built-in transportation wheels and a max user weight of 350 lbs