Source hydration packs and accessories are designed to make your outdoor adventure more exciting and dependable. They can deliver water efficiently and effectively, so you don't have to worry about dehydration on the course. With a Source pack and accessories, you can be sure that everything, even everything else, won't go to plan. These high-quality, lightweight packs come with every accessory you will ever need for your daily needs. The Source Hydration reservoirs are made of BPA-free polyethylene, with screw top closures to keep out dirt and grime and an easy-access bite valve that allows you to drink without taking off your pack or gloves.