Hydrapak Ultraflask Bottle Cap

Run fast, filter faster. Upgrade your HydraPak running flask with the Ultraflask Filter Cap. This lightweight, 42mm cap provides a straightforward filtration solution, removing E. coli bacteria and cysts from up to 1.500 liters of water at a rate of over 1 liter per minute. Drink freshly filtered water directly through the high-flow Blaster bite valve, which auto-seals to prevent drips. It´s the ultimate compact and easy-to-use accessory for runners, ensuring safe hydration on any trail without adding extra weight or bulk to your gear