The bino suspender harness strap from Swarovski is a fully adjustable elastic strap maintaining a bit more tension, and lending significant support which helps you hold your binocular steadier.
It also keeps them close to your body to prevent swinging around. When not in use it greatly distributes your binocular's weight across your back and shoulders, while it allows the binoculars to slide up and flex out while in use.
Readily available for the outdoor enthusiast, it is greatly recommended for use during activities where you'll really be moving around. Attaches to any binocular, (can be used with cameras too) though use with very large binoculrs such as the 8x56 & 15x56 SLC's is not recommended.