The Bino Suspender Harness Strap from Swarovski greatly distributes a binocular's weight across your back and shoulders, as well as keeping them close to your body to prevent swinging around. It is greatly recommended for using binoculars during activities where you'll be moving around quite a bit, though you'd never want to be galloping upon a horse with such a contraption.
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. Attaches to any binocular, though gargantuan monstrosities such as the 8x56 & 15x56 SLC binoculars is not recommended.
Note! The Swarovski suspenders have a tight fitting to the binocular's strap lug, and the addition of the recommended Hama triangular rings will more easily facilitate the attachment and detachment of your binocular from the harness.