Endurance races are demanding. So are endurance runners. That’s why the updated ADV SKIN 12 is designed for more freedom and snugness. It still covers all the essentials like easy hydration, while maximizing comfort and stability - with new ultra-versatile storage into the bargain. This 12L-version is ideal for those longer races and outings Salomon Vest ADV SKIN 12 Pack with Flasks Red