21oz Quick Stow Flask - Insulated Stainless Steel Water Bottle for Hiking, Camping & Outdoor Adventures | Leak Proof & BPA Free

Stash it in your running vest, belt, or even in the palm of your hand. This lightweight, collapsible flask features our classic one-piece silicone bite valve for rapid hydration on race day, and packs down easily once it's empty. We designed the Quick Stow to fit easily in the front compartments of all of our running vests. Once it's empty, it folds down small enough to fit in your pocket.