Camelbak hydrobak hydration pack combat dehydration with camelbaks hydrobak hydration pack camelbaks wonderfully minimalist bike pack will hold their 15l antidote reservoir in a narrow profile which ensures that you maintain maximum range of motion this hydrobak hydration pack is ultra light coming with one small front pocket and a reflective strip for increased visibility in early mornings and late evenings features antidote resovoir features14 turn easy openclose cap lightweigh