A FAVORITE FOR MOVING FAST AND LIGHT IN THE BACKCOUNTRYThis lightweight Fastpack 40 has an optimal weight-to-capacity ratio for longer adventures over rugged terrain so you can move fast in the backcountry. True to our roots, it uniquely fits like a vest with water bottles up front, but distributes weight like a pack. We gave it an upgrade with Infiknit(TM) and FastFlow technology to increase the backpanel's breathability and moisture wicking. This do-it-all pack also has plenty of dedicated external storage, a roll-top opening and a full-side external zipper for easy access to anything inside.FEATURESLarge front storage for water, phone, maps, glasses, or foodUnique zip-down main compartment for total access to gearRoll-top closure expands or compresses to secure varying capacitiesLarge external stretch mesh pockets for quick accessSliding rail sternum strapsRemovable and height-adjustable T-hook waistbelt for heavier loadsEasy access pocket with keyfobMonoRip Mesh is very strong, but extremely breathable.Water bottles not includedSPECSVolume: 2440.95 in3 / 40.0LHeight: 19.5" / 49.5 cmWidth: 11.0" / 27.9 cmLength: 7.8" / 19.7 cmWeight: 1.58 lbs. / 0.715 kgMATERIALS100% polyester