HSA 800 EVO Hydration System Donic X-Range™ gearing technology gives you

X-Range™ gearing technology gives you more range and a smoother gear progression

Lauren wears size S

Adjustable elastic clip belt for comfort

Alongside Butterfly's technicians

Back fabric is our Velocity mesh for breathability

HSA 800 EVO Hydration System Donic X-Range™ gearing technology gives youThe HSA 800 Evo System is an update of the HSF AERO HC 800 with improved Garmin placement and a refined rear cap mechanism. The HSA 800 EVO has been designed to incorporate all the essential features required of an aerobar bottle system along with a couple of premium add ons. Additionally, the shape of the bottle has been designed to hide the cage from the wind. We worked to minimize frontal area wherever possible to avoid adding aero drag to your