From the sun up till sun down, expand your horizons with the Ultimate Direction Fastpack 35 Hydration Pack. The Fastpack 35 features a generous main compartment that accommodates a day's worth of running essentials, while a myriad of shove-it storage options in the front and on the harness provide quick and easy access to water, snacks, maps, or extra layers. Meanwhile, the lightweight fabric is both durable and breathable to assure maximum performance, and the waist belt is adjustable to maintain a secure, load-stabilizing carry experience.