The Hydrapak Stow 1L Water Bottle is a light and convenient alternative to hauling clunky water bottles during our hikes or travels. This collapsible bottle easily fits into pockets or pack nooks and flattens when empty to save space. The abrasion-resistant construction and welded seams provide outdoor durability, and this bottle is attachable to most 28mm threaded water filters to double as a backcountry squeeze bag.