Open Box Dealer Demo Zeiss Air Cell Comfort Strap Nylon Black Small NSN 9005.9. The Air Cell Comfort Carrying Strap by Zeiss is a useful binocular accessory features air cushions embedded the fully adjustable strap that provide added comfort when carrying larger binoculars over long periods of time. The Zeiss Binocular Strap 52 91 13 also includes quick-release fasteners which allow the binocular strap to be detached and reattached with ease. Be sure to see the full line of Zeiss binocular accessories for the latest in Zeiss binocular additions. Specifications for Zeiss Air Cell Comfort Strap: Manufacturer: Zeiss Color: Black Fabric/Material: Nylon Size: Medium Length: 4 in Package Type: Box Width: 2.5 in Height: 4 in Depth/Thickness: 1 in Features of Zeiss Air Cell Comfort Strap Cushioned strap for comfort Quick-release fasteners Package Contents: Zeiss Air Cell Comfort Strap Zeiss 529113-0000-000: Air Cell Comfort Strap Nylon Black Small NSN 9005.9