The harness has been designed to perfectly fit your SWAROVSKI OPTIK binoculars. The ergonomically shaped, rugged straps, the strategically placed padding, and the X-design on the back relieve neck strain. The flat back design allows use of a backpack. Easy to use even with one hand, open the front flap using the magnetic fastener on top of the harness and fold it down. It’s even easy to do this with one hand. To ensure the flap stays put, simply attach it to the bottom of the harness with a magnetic fastener. Swarovski BHB Small Binocular Harness Bag 44226