The Camelbak Quick Stow Flask was designed to fit easily in the front of a running vest or even the palm of your hand. Once it’s empty, it folds down small enough to fit in your pocket. Stash it in your running vest, belt, or even in the palm of your hand. This lightweight, collapsible flask features a classic one-piece silicone bite valve for rapid hydration on race day, and packs down easily once it’s empty. Camelbak Quick Stow Flask Features Bite valve self-seals after each drink, eliminating annoying drips Empty flask collapses and folds ultra-compact to fit in most pockets Cap is top-rack dishwasher safe Volume indicators in ounces and milliliters for tracking hydration and adding electrolytes Hang flask upside down for easy drainage and drying