From narrow slot canyons to wide-open mountain meadows, the Camelbak Rim Runner Hydration Backpack keeps you comfortable and hydrated when you're on the trail. It has a low-profile design that won't throw you off during hikes or runs, and the addition of compression straps, a waist belt, and a strategically-placed reservoir maximize stability when you're moving through uneven terrain. The new Crux reservoir allows you to drink more water per sip, has a valve switch that prevents spillage, and includes a Magnetic Tube Trap that keeps the valve within easy reach at all times.