The Profile Design Aeria Hydration System Front 857ml is built to seamlessly integrate with the Aeria Ultimate Stem (stem required) and works with the Aeria Ultimate aerobar for a clean, fully integrated front-end “super bike” setup. With its race-proven no splash fill port, straw magnet mount, and controlled bite valve, you can hydrate quickly without disrupting your ride, while the removable computer mount keeps your cockpit tidy and responsive.