Wenzel Hydrator Backpack: * Back panel is mesh over molded ventilated foam with integrated air channels * Hiking pole straps * Daisy chain * Vertical front zipper * Dual mesh water bottle pockets * Microban anti-microbial bladder/tube/bite valve * Internal organizer in front pocket * 2 main compartments * Helmet storage * Bike pump pouch * Sternum strap * Capacity: 650 cu in * Dimensions: 17" x 6" x 9"