HydraPak UltraFlask+ 42mm Filter Cap
Pickup available at Boréal Running
Usually ready in 24 hours
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HydraPak UltraFlask+ 42mm Filter Cap
Turn your flask into a portable filtration system
The HydraPak UltraFlask+ Filter Cap quickly converts compatible flasks into a portable water filtration solution. Whether you're trail running, hiking, bikepacking or camping, it helps provide access to drinking water when refill stations are unavailable.
Reliable hydration for longer adventures
Its integrated filtration technology helps reduce bacteria and protozoa commonly found in natural water sources. This allows you to refill from streams, lakes and other freshwater sources when conditions permit.
Built for trail running, hiking and bikepacking
Lightweight and compact, the UltraFlask+ Filter Cap integrates easily into your gear without adding unnecessary bulk. It is an excellent solution for ultrarunners, hikers and outdoor adventurers seeking greater self-sufficiency.
Why choose the HydraPak UltraFlask+ Filter Cap?
- Access water from natural sources
- Reduces bacteria and protozoa
- Ultralight compact design
- Ideal for trail and hiking
- Compatible with select HydraPak flasks
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