Made with webbing nylon that is rated to several tonnes with an industrial strength sewn loop. These lifting straps have been designed for durability and heavy lifting in mind. They provide improved bar coverage over other straps great on exercises such as deadlifts, pull ups, pull downs, bent over rows or any barbell/dumbbell exercise requiring heavy grip. You will need to break them in as they will be smooth when you get them. Rub them on a bar, crush some chalk in, and get them a bit rougher.