Nathan Pinnacle 4L Hydration Race Vest - Women'sNo 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 FIT Designed to keep you moving in total comfort, this vest is lightweight, breathable and features tapered back panels to keep the moisture out. Its