Profile Design Hydration System - Aeroflow Tri BikesHydration System Aeroflow HSF AEROFLOW Product Overview The Aeroflow bottles have been designed specifically with disc brake tri bikes in mind. By positioning the bottle close to the frame, we can reduce the impact on steering when carrying a heavy bottle on the bars. The Aeroflow is available in three sizes and is intended to be paired with the Tri Stem. The small bottle works best with the 80mm Tri Stem but can also be used with the 105mm stem. The