The TnP Accessories ab door sit up bar lets you get an abdominal workout almost any place that has a door, making it easy to keep in shape at home. Constructed of sturdy steel it has foam padding which gives you cushioning comfort for the back of your legs. This doorway bar is both effective and comfortable to use. Adjustable to fit securely, this bar works with almost any door and is designed to work with and fit under closed doors. The convenient size make it easy to exercise at home or on the go.