Your hydration hero. The breathable and comfortable Camelbak Ultra Belt 17 ounce brings minimal bulk with maximum storage being the lightest option in Camelbak's hydration belts. Storing a 17 ounce Quick Stow flask, you can run longer and stay hands free the entire ride, run or hike. An extra stretch pocket holds your keys, gels, and other essentials and an integrated trekking pole carry keeps you safe on more technical terrain.