Check the listing for details. Vortex Glasspak Binocular Harness Coyote Brown Bag Carry Backpack Case & Keepers. Condition: Open box. Listed at 24.99 USD. The Vortex Glasspak Binocular Harness Coyote Brown Bag is a durable and convenient carrying case designed to protect binoculars during outdoor activities. The harness allows for hands-free carrying, while the backpack design provides additional storage space for accessories. The bag is made by Vortex Optics and comes with keepers to secure the binoculars in place.