The Camelbak Trail Run Vest hydration backpack is perfect for runners who love to venture into the great outdoors. It allows you to carry your essentials while staying hydrated during your runs. This lightweight and breathable backpack features adjustable straps for a perfect fit and a practical storage system for all your accessories. 3D Vent Mesh: Designed to maximize airflow and comfort throughout your run Secure Phone Pocket: Keep your phone close to the vest and close to you with our easy-access phone pocket Dual Adjustable Sternum Strap: For an easily customizable fit, ensuring your comfort all day long Stretch Overflow Pockets: Perfect for the little extras you might need during your journey Food and Gear Storage: Just enough space for all your snacks, water, and running gear Trekking Pole Attachment: Keeps your trekking poles secure and within reach for moments when you need to stabilize yourself Reflectivity: Various highly visible reflective elements so you can run safely when the sun goes down Safety Whistle: On the trails, your safety is our top priority. The safety whistle is perfect for alerting others that you're approaching or for calling for help Tube Trap Attachment: Allows you to grab the hydration tube without having to undo the buckle or hook, for easy hydration while running Ultralight Materials: This means no unnecessary baggage for your hike, allowing you to run comfortably all day Volume: 7 L Weight: 190 g Camelbak Trail Run Vest - Hydration backpack | Hardloop