Vortex Binocular Harness - OpticsPlanet.com Product in Focus

If you want ultimate comfort for your binocular and you want to keep it safe, definitely look into getting a Vortex Binocular harness. This harness allows you to use both hands when not using the binocular while keeping it close to you body, typical straps allow the binocular to swing around but the harness will keep it close so if you're walking, running, jumping, or crawling as you would out in the field, this will keep you comfortable and those binoculars safe!

[Alwaysfresh]

how do they attach to the binos? i don't think those hooks would fit in the holes.