What Our Gearhead(R) Experts Are Saying:"I use the ADV Skin 12L Gradient Hydration Pack for long trail days because it balances storage, stability, and comfort better than anything else I've tried. The Sensifit design hugs without restricting my breathing, and the quick link system is super convenient for mid-run adjustments. There's enough room for layers, nutrition, and mandatory gear, and the soft flasks stay accessible without bouncing. If I'm heading out for hours-or racing-this is the pack I trust."We reach for the Salomon ADV Skin 12L Gradient Hydration Pack when our longest days on the trail demand efficiency, stability, and all-day comfort. Designed to move with us instead of against us, its Sensifit construction offers an enveloping fit that feels secure but breathable on steep climbs, rocky traverses, and soft forest paths. With 12 liters of well-organized storage, it keeps our water, nutrition, and essentials close at hand during endurance efforts and extended missions beyond the trailhead. The quick link adjustment makes it easy to fine-tune fit on the move, while the Y-shaped construction enhances stability as our pace changes. Multiple pole-holding solutions and extra loops let us customize how we carry gear, and dual soft-flask pockets provide rapid access to hydration. Built for demanding efforts and refined to stay comfortable over long distances, this pack supports everything from big adventure runs to full-day training sessions.