Use the CanDo® Over Door Exercise Bar & Tubing in the standing or seated position. Exercise superficial muscles and the deeper lying muscles. The bar can be used isometrically and dynamically. X-light resistance, yellow, CanDo® exercise tubing is attached to both ends of foam padded exercise bar. Tubing is then attached to swivel-pulley system. The pulley is attached to top of door or in side door jamb by closing the door on the included door anchor. Closing the door creates your instant exercise station.