For those looking to have water and key storage only, Hydropak Hydration System packs are a simple way to stay hydrated. With an available 50 oz. of fluid capacity, it’s ready for quick trips that don’t need storage capabilities. CamelBak uses a large mouth opening to facilitate cleaning of its Omega Hydrotanium Reservoir. Continuing with its lightweight minimalist storage, shoulder straps use mesh construction, with a sternum strap, for breathability and pack control. Stay hydrated with a CamelBak Hydropak.