1,Durable Material: Sturdy nylon belt with 2 buttonholes at both ends,suitable for binoculars of most ,it is light and strong. 2,Comfortable and Labor-saving: -shaped,effectively disperses ,makes neck and shoulders bear pressure more evenly,and reduces pressure,thereby improving and reducing fatigue and discomfort caused by long-term carrying of the binoculars,liberating hands. 3,Keep Binoculars Safe: Keep binoculars safe and will not move around when walking,running,crossing a or climbing. 4,No Interfering: The binocular strap brings the binoculars to the chest,you can easily slide the binoculars into the observation position without interfering with your operation. 5,Adjustable Function: Universal binocular strap,suitable for all binoculars.Its front and back can be adjusted to suit any adult's body type.Can be used with cameras of many types and measuring instruments. Whether length adjustable: yes Weight: about 4.3 ounces Material:Artificial leather + nylon colour:black Package Contents: 1 x strap Only the above package content,other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.