The U.S. Issue 3L Desert Camelbak Hydration Backpack is an official U.S. military issue, and it's perfect for outdoor enthusiasts and tactical use. With a 3-liter (100-ounce) capacity reservoir, it ensures you stay hydrated during any activity. When not using as a backpack, the "D" rings can attach to a backpack or vest. The bag also features an easy carry handle, quick disconnect bite valve, and a back drop in pocket that give you space for extras like snacks or a filter. • Bladder included • Low infrared reflective [IRR] buckles and webbing. • Polyurethane reservoir is slosh-free and collapses on itself • Tethered screw-cap closure lets you easily fill the reservoir while providing a positive seal for leak-proof performance • Extra-wide opening can be filled with ice cubes for extra-cool hot weather hydrating • HydroLock™ valve provides positive shut off switch for anti-leak security • Big Bite™ silicone valve releases more water when you need it • Insulated tube cover • Ergonomic handle for filling on the go • Sternum strap for added stability • 1000 denier Cordura® nylon shell and heavy duty, double-stitched construction Excellent condition. Marks on bite valve cover, but bite valve has original packaging. Light scuffs on bladder cover. No storage on the front of the unit. There is a large drop-in pocket on the back. Inside the pocket, there are three snaps which close the bladder compartment. I can only get one of the three snaps closed.