This great looking Fourteener Backpack from CamelBak includes a hiker's organizer pocket, quick stash overflow storage, four-point compression straps, sunglasses pocket, stretch side pockets, and tool attachments. Designed to carry extra layers, rain gear, food, head lamp, trail maps, ice axe, trekking poles, media, and sunglasses - you'll have all your outdoor essentials close at hand. Antidote Reservoir with 100-oz. capacity features Quick Link System, 1/4 turn - easy open/close cap, lightweight fill port, dryer arms, center baffling and low-profile design, patented Big Bite valve, HydroGuard technology, PureFlow tube, and easy-to-clean wide-mouth opening. 100-denier rain Dobby, 230-denier Taffeta, and 420-denier nylon with DWR construction. Weighs 2.36 lbs. 20-1/2" x 10-1/2" x 10-1/2".