The Rogue Backpack is one for the avid outdoors person. Features external fill, dual compression straps, overflow storage, reflectivity, and bike tool organizer pocket. Handy little pack is designed to carry a multi-tool, pump, spare tube, phone, wallet, and your keys. Antidote Reservoir with 70-oz. capacity features 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. 210-denier nylon and 70-denier Diamond Clarus with DWR construction. Weighs 9.5 oz. 15-1/2" x 7" x 5-1/2".