Rehydrate while staying tucked into the aero position with Torhans Aero 20™ Hydration System Water Bottle. Like it’s big brother Aero 30™, the Aero 20™ features a high aspect ratio, airfoil design from bottom to top of the Aero mast so that you can keep speeding on the bike. It has two channels to mount high or low, depending on rider preference, and an XFlow™ cover to keep liquids from splashing out. BPA free. Comes with AeroFlow™ straw housing & straw, XFlow™ fill-on-the-go cap, Aero bar dual-channel mounting system and mounting accessories