Use the Black Diamond Vario Chest Harness in conjunction with your regular harness to keep you upright when jugging a fixed line, aiding a roof, or rappelling with a heady load. Don't risk being flipped upside down because of a unique climbing situation, just clip the rope though the Vario to keep you upright. You can even use this chest harness to keep yourself upright in the event of a crevasse fall during glacier travel.