Lightweight recycled nylon ripstop is weather-resistant and highly packable Light and Versatile Lightweight, padded, breathable shoulder straps are comfortable for all-day wear, but tuck away neatly to turn this bag into a tote Stretch Water-Bottle Pockets Dual, oversized stretch-mesh water-bottle pockets Organization and Pockets Roomy interior has a zippered internal pocket and hidden back pocket with Velcro closure; zippered exterior pocket includes a key clip Lightweight and Packable Lightweight construction allows this pack to stuff into its own pocket for easy packing and travel Multiple Closure Options Use the main zippered pocket to open and close the pack; zippered main pocket has a cinch closure for tightening down smaller loads; side-release buckles allow you to expand the volume and carry more when needed