The CamelBak Quick Stow Flask is designed as your perfect running fuel companion – holding 355ml of your desired fuel source you can stash it in your running vest, belt, or even in the palm of your hand. The lightweight, collapsible flask features CamelBak’s classic one-piece silicone bite valve for rapid hydration when out on the run, and packs down easily once it’s empty. The Quick Stow has been designed to fit easily in the front compartments of all of the CamelBak running vests, as well as most other running packs. Once it’s empty, it folds down small enough to fit in your pocket.