The source rapid 2l hydration pack this pack is made for biking or running of course it also suits perfectly for a 12 day hike when you just need water a snack and maybe a cover of some sort the rapid gives you 2l of cargo space to carry what you need it comes with a bladder and the docking station to park and protect your hydration valve during your ride source rapid 2l hydration pack features rapid hydration pack features lightweight durable fabrics 70d ripstop nylon de