HydraPak Flux Filter Cap
Best lightweight filtration solution for minimalist backcountry hikers and long-distance trekkers.
This hybrid container offers the structure of a hard bottle with the packability of a soft flask. It is an ideal choice for those looking to shed weight without sacrificing the convenience of a standard water bottle.
More Flux options
Who it's for
- Minimalist backpackers needing to maximize limited pack space
- Long-distance hikers prioritizing safe, reliable water filtration
- Ultralight adventurers seeking durable, weight-conscious hydration gear
Who should skip it
- Athletes needing rapid hydration during high-intensity efforts
- Users wanting low-maintenance gear that dries quickly
- Campers frequently setting bottles on uneven, sloped ground
Performance breakdown
Portability
Collapses to almost nothing, making it a dream for ultralight packing.
Filtration Speed
Squeezable design delivers water rapidly without requiring excessive physical effort.
Filter Longevity
Handles 1500 liters, providing ample capacity for multiple long-distance thru-hikes.
Ease of Cleaning
Flexible material is easy to rinse, though filter maintenance requires attention.
Durability
Rugged TPU construction withstands trail abuse while remaining impressively lightweight.
Versatility
Seamlessly transitions from a standard water bottle to a reliable filtration system.
Key Specs
Capacity
1.5 Liters
Material
TPU and HDPE
Filter Type
Hollow Fiber
Micron Rating
0.2 microns
Filter Lifespan
1500 liters (396 gallons)
Contaminants Removed
Bacteria, Protozoa, Cysts, Sediment
Closure Type
Screw Cap
Carry Method
Handheld
Collapsible
Yes
Filter Included
Yes
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