The Quick Release Binocular Harness strap from Leupold evenly distributes a binocular's weight across your back and shoulders, as well as keeping them close to your body to prevent swinging. It is ideal while using binoculars during activities where you'll be moving around quite a bit. An added benefit to a suspender harness strap is that you'll be able to hold your binocular steadier thanks to the elasticity maintaining a bit more tension which lends significant support. The strap can be used with any binocular, but it is not recommended for models with objectives of 50mm or larger.