Heading out for a long run? Not sure about the weather, or your ability to navigate and get home before dark? When you need to bring a few extra pieces of kit with you, or if you're going fast and light, the Duro 6 accommodates just enough fuel and gear to get you there and back-no matter how far "there" may be. With ample room for long runs requiring extra layers or gear, thoughtful and accessible storage for fuel and other small items, a Hydraulics LT 1.5L reservoir, soft flask compatibility, and bounce-free carry, this pack will please beginning runners and experts alike.