Features Synthetic Chest pocket Back compartment Two front elastic hydration pockets Exterior front zip cell phone pocket Battery pocket Description Product Description With the Salomon S-Lab Sense Ultra Set hydration pack, elite runners won't have to pull over until after crossing the finish line. Designed for minimal weight, this breathable running vest is so soft it can be worn directly against the skin. Multiple pockets deliver efficient gear storage; included BPA-free bottles pair with a blaster valve for easy drinking. Reflectivity and a whistle make smart additions to your race.