backpack chest strap adjustable backpack sternum strap chest belt with buckle for hiking and jogging, black Suitable for handbags,Water bag backpack, ice bag backpack,sports backpack，luggage, totes, briefcases, carts, wheeled luggage and more, can release your hands and help you enjoy your trips better. Keep shoulder straps of your backpack securely in place, and give your hands free. Good choice for outdoor activities. Note: Please allow a slight errors due to manual measurements.