Keep your hands protected during your next weightlifting session with the Harbinger Adults' Lifting Hooks, which are made of 55% neoprene, 25% polypropylene, 15% polyester and 5% iron for durability and a great feel. These adjustable hooks have a no-drop grip and a heavy-duty, extra-wide design. Work on most weightlifting bars. Harbinger Adults' Lifting Hooks Blue/Black - Exercise Accessories at Academy Sports