The CamelBak M.U.L.E. Black 2.0 Mountain Biking Hydration Backpack is a premium hydration pack designed specifically for mountain biking. With a large 3L / 100oz volume, it provides ample water for long rides. The pack features a sleek black color and comes with a helmet hook for easy access while biking. Made with BPA/BPS/BPF free materials, it ensures a safe and reliable water supply. The Crux reservoir model offers easy cleaning and maintenance, making it a convenient choice for outdoor activities like hiking and bicycling.