Go minimal! Our lightest most minimal hydration belt stores a 17-oz Quick Stow flask that molds to the shape of your body. The 3D mesh material stays light and breathable on even the hottest runs, and the extra stretch pocket keeps gels, keys and cards safely tucked away. Plus, you won’t be stuck carrying a big empty bottle at the end of your run—once the flask is empty, just fold it up and tuck it away. It even includes an integrated trekking pole carry for the more technical runs. Features 17oz Quick Stow flask is lightweight, collapsible and features our classic one-piece silicone bite valve for rapid hydration 3D Micro Mesh: Multi-directional air flow and cushioning to maximize comfort and breathability Secure Phone Pocket: Conveniently located with a zipper closure for secured quick access Reflectivity: For early morning or late-night runs Trekking Pole Carry: Easily remove or replace poles while running Ultra Light Materials: Unrivaled breathability, comfort and durability Fuel and Gear Storage: Organize run essentials with pockets specifically designed for Quick Stow flasks