Efficiently work out your abdominals without straining your lower back with Body-Solid Gut-Blaster Slings (AAB2). These ab slings are designed to suspend users above the ground for leg raises and oblique exercises, encouraging superior toning, trimming, and conditioning of the entire abdominal area. The slings can even be helpful for bad backs by helping stretch back muscles and decompressing the spine. These abdominal slings are made with 10,000-pound-capacity solid steel Fire and Rescue locking carabiners that attach to any chin-up bar