GripSling Raw Training Straps with Handles AS SEEN ON INSTAGRAM: @GripSling Add a new, creative element to your pull-up and back workouts. Develop your grip strength, or harness your wrists to relieve hand strain. Multipurpose functionality: easily secure GripSling to a pull-up bar, tree branch, or other equipment. 100% money-back satisfaction guarantee & proudly manufactured in the USA!