The HXGN adjustable hanging ab straps help carry your weight as you perform exercises such as knee raises and leg raises. They remove the focus of holding your bodyweight by your grip and instead allow you to put the focus on the muscles you are trying to work. Simply attach the slings to your pull-up bar, power cage, rack or power tower using the hook and loop fastening and position your arms through the straps. You no longer need to worry about sweaty palms or a loosening grip getting in the way of your abdominal training. Hanging exercises can be great for training the core. They also don't place stress on your spine like normal floor-based sit-ups and crunches. Sold as a pair and made from durable, heavy duty canvas, the straps are padded for enhanced comfort.