This is a wheelchair that make be used with self-propulsion in mind. This uses 24-inch wheels that can be removed and a full aluminum body. This uses two wheel locks with one for transport chair needs. The back can fold down and the upholstery is made of nylon. It also uses 8-inch casters, anti-tippers and swinging foot rests. This unit is made to hold 250 pounds of weight at a time.