What Our Gearhead(R) Experts Are Saying:"The ADV Skin 12 is my go-to hydration vest for ultra-distance runs and big mountain days. The fit is snug yet flexible, and the pocket design makes accessing hydration, snacks, or layers a breeze. The 12L capacity is perfect for carrying everything I need on longer, self-supported adventures."Designed to go the distance, the Salomon ADV Skin 12 is a hydration vest built for ultra-runners, endurance athletes, and long-distance adventurers. With a 12-liter capacity, it provides ample storage for your gear and hydration, making it ideal for trails over 60km. The SensiFit(TM) design wraps securely around your body for a snug, bounce-free fit, while the innovative Y-shaped construction evenly distributes weight for all-day comfort. Two included 500ml soft flasks fit into the front stretch pockets, keeping hydration close at hand. Multiple compartments, including a stretchable main storage area, allow you to pack nutrition, extra layers, or even trekking poles with ease. This vest lets you focus on the trail, not your gear.