Nathan Sports NS40180-50043-XS hydration system Running Hydration vest

No matter how fast or far you're running, this vest is built to keep you at the top of your game. Designed to be 20% lighter and more breathable than the Krar and Howe Vests, the Pinnacle series fits like a second-skin and adds two new kangaroo pockets to the collection of smart storage spaces.PERFECT FITDesigned to keep you moving in total comfort, this vest is lightweight, breathable and features tapered back panels to keep the moisture out. Its new enhanced shape boasts a slightly longer back for efficient, dispersed capacity. With just the right chafe-free fit and form, it's the perfect race day vest! SMART STORAGE Thoughtful storage is always in reach including two new Kangaroo pockets allowing one side entry access point and a vertical pocket for larger items like trekking poles. Two water-resistant pockets are included on the chest for phone and a pill pocket complete with whistle. A large diagonal zipper and size pockets allow for easy access to larger items like extra layers and smaller things like keys and nutrition.