Gas mask bag, XM28E4; Vietnam dated "Tunnel Rats" . Originally for small emergency gas masks used in riot control, the size and construction of this bag make it a perfect camera bag for river rafting. Fold-over rubber inner is secured by two lift-a-dot fasteners to hold your valuables dry and secure. Inner bladder is protected by a nylon outer cover that has 2 ALICE keepers attached so bag can be worn on your belt. Carry space measures 5 ½” tall x 8” wide x 2” deep. O.D. Green New original surplus. comes in original wrapper, but have been opened to check that snaps work properly. Snaps will fail over time . These appear to be surpluses because of defective snap closures. These bags are sold by the pair for $9.95. snaps are defective and will fail.