The Grouse Triangle sits firmly on the body thanks to three-point buttoning and a rubberized section on the shoulder. The bag has a large, spacious compartment with a zipper. There is a zippered inside mesh pocket, a detachable mesh compartment with drawcord, and a bottle pocket to keep your thermos standing upright. On the outside is a large mesh pocket and a detachable radio pocket. Built-in bird snares at the bottom. Top loop for hanging on a hook. The Grouse Triangle is made of strong, water-repellent polyester fabric with taped seams. The back has soft foam-mesh padding for increased comfort against the body. Embroidered low-contrast Chevalier logo. 17-liter volume. External dimensions: 17.5x6.5x21 inches