The Pinnacle FeatherLite Hydration Vest is an ultra lightweight and breathable, minimalist vest with just the right amount of hydration and storage, ideal for road and trail training. Light As Air Ultra lightweight vest features power stretch mesh and stretch woven fabric for maximum breathability and comfort. Hydrate Faster & Easier Easy to use and access soft flasks in front pockets. Perfect Storage Just the right amount of pockets, 4 front and 1 main zippered back pocket that can hold a jacket, hat and other valuables. Features: Unisex, compression fitted vest designed with a longer back for the ultimate fit and function Shoulders and upper back are made of power mesh for maximum breathability and ultra light adaptable comfort Back pocket with 1.5L capacity and right entry zipper closure designed to store jacket, essentials and valuables 4 Front pockets fit bottles and flasks up to 20oz Front sternum and side adjustment straps are designed for a bounce free run fit Unisex size range that fits to adapt by two sizes: XXS/XS, S/M, L/XL and XXL Storage capacity: 91.5 cu in / 1.5L Weight without flask: 4.4oz / 125.4g Weight with flask: 5.5oz / 156.6g Care: Hand Wash Cold, Line Dry, Do Not Bleach, Do Not Iron Nathan Pinnacle FeatherLite 1.5 Liter Hydration Vest