The upgraded North Face Sliquid hydration pack now holds a whopping 100oz of refreshing fluid. With its aerobic design, the Sliquid is great for activity where thirst looms large like summer hikes and extended bike rides. The backpanel and shoulder straps have breathable aeromesh for quick sweat evaporation. Side compression straps cinch down pack contents which might include an extra layer, food, headlamp, etc. The front pocket stores smaller items like keys or an energy bar, and roomy side pockets fit even more. Strap a wet layer you want to dry on the pack face with the handy bungee cinch.