The Salomon Agile 2 20 AW Hydration Pack is made for active runners who frequently finds themselves in the mountains, race track, or long endurance trails. This pack is made from durable nylon and mesh, and it's loaded with a large compartment that holds your snacks, gear, clothing, and beer. The roll top closes tightly to secure your belongings, and multiple pockets offer extra room. The Airvent Agility back panel supports you as you run and the adjustable waist belt holds the pack in place. In case you need some more fluids on your journey, the Agile Pack is hydration compatible up to a 2L bladder. And if you want more support on advanced trails, simply attach your trekking poles and push on.