Running 50 miles races through rugged landscapes with a couple thousand feet of elevation gain is uncomfortable enough, you don’t have to add a bulky hydration pack to the equation. Gear up for your next ultra with the low-profile Salomon ADV Skin 5L Set Hydration Vest. It’s got a compact and streamlined design, but still has all the storage you need for layers, nutrition, and hydration when you’re deep into your race with not an aid station in sight. Dual pockets on either side hold included soft flasks, giving you quick access to water, electrolyte mixes, or one of each. The back kangaroo pocket is also compatible with a 1. 5L reservoir for even more hydration capacity, while large stretch pockets on the shoulder straps keep packable rain shells, headbands, and running hats close by. Add in the benefits of Motion Fit technology for a fit that feels more like a piece of apparel than a running pack, and you’ll be able to keep your mind focused and free from distractions.