SPECS: Dimensions: 40 x 29.5 x 21 cm / 15.7 x 11.6 x 8.3 in Pack Weight: 160g/5 oz Torso Fit Range: Fits a chest size of: S 71-86 cm/28-34 in M 81-101 cm/32-40 in L 96-116 cm/38-46 in Gear Capacity: 6L/360 cu in Hydration Capacity” 1L/34 oz 13 Exterior Pockets FEATURES: Running vest constructed with lightweight materials that won't weigh you down Front storage pockets for easy access to essentials Zippered pocket to keep your phone secure Includes a Trekking Pole Carry to easily remove or replace poles while running Ideal for long-distance training and elite-level racing Dual adjustable sternum straps for a customizable fit Equipped with two pockets specifically designed to store QuickStow™ flasks Reflective accents to keep you safe on late night or early morning runs Removable safety whistle 3D Vent mesh allows maximum airflow keeping you cool and comfortable Includes two QuickStow™ flasks that hold up to 1L/ 34 oz. of fluid collectively CamelBak Men's Ultra Pro Running Vest