The fitness abdominal belts are made of stainless steel and nylon webbing, along with thick EVA padding and heavy-duty fabric with steel buttons that make them more durable. Lightweight and portable, but also strong and durable. The straps' padded arm loops hang with soft and generous lining, super comfortable to wear with no chemical smell. Our ab slings provide full support for forearms and elbows with no discomfort so you can focus on your abs workout. The ab slings are perfect for any type of pull up bar and pull up bar for wall, ceiling, door frame or pull up bars in a calisthenics park. So you can train anywhere and easily, wherever you want. These pull-up bar ab belts feature rare forced double-stitching with great design and ever-durable adjustable straps that make direct contact with a pull-up bar's steel carabiner. This ensures a scratch and mark free mark. Padded hanging abdominal straps focus all your strength and energy on abdominal movement instead of hurting your arms and building a strong abdominal muscle. Increase your strength, blood flow around your abdomen and burn calories. Product Material: Oxford cloth + webbing