HydraPak Flux Collapsible Water Bottle 1L
- About 1,500 liters filter life
- Over 1 L per minute flow
- 99.9999% bacteria, 99.999% cysts
- 99.999% microplastics per NSF 42, 3.0 microns or larger
- 42mm thread, fits 42mm backcountry filters
- 50% lighter than a hard bottle
Updated 20 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A light, packable bottle and filter combo for hikers who drink straight from streams. Viruses are not on the removal list, so it is not a full purifier.
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ASIN: B0C48HPMNGCategory: Camping Water Filters
Overview
A threaded filter cap screwed onto a soft collapsible bottle turns stream water into drinking water as you squeeze. A high flow nozzle opens and locks with one hand, and a dust cover protects the valve.
Weight and pack size are why to choose it, since the empty bottle rolls down to pocket size. The listing covers bacteria, cysts and microplastics but says nothing about viruses, and one spec field wrongly calls it ultraviolet.
Who it's for
Ultralight hikers and runners who refill from clear streams will use it most. Anyone drinking from water where viruses are a concern needs a purifier.
Pros and cons
- Collapses to pocket size when empty
- Fast flow through the filter
- One hand nozzle with dust cover
- Works with other 42mm threaded filters
- Virus removal not listed
- Spec field mislabels purification type
Performance notes
Flow depends on how hard you squeeze and how clean the filter is, and silty water slows it as the filter loads. The filter traps bacteria, cysts and microplastics by size. Nothing in the listing covers viruses or chemicals.
Specifications
| Brand | HydraPak |
|---|---|
| Dimensions & fit | |
| Thread size | 42mm |
| Capacity & performance | |
| Maximum Flow Rate | Over 1 L per minute |
| Filter Life Cycle | About 1,500 liters |
| Included components | |
| Included Components | Nozzle |
| Other details | |
| Purification Method | Filtration (spec field says ultraviolet) |
| Container Type | Collapsible bottle |
| Removal rating | Bacteria 99.9999%, cysts 99.999%, microplastics 99.999% |
| Test standard | EPA Guide Standards, NSF 42 |
Frequently asked questions
How big is the HydraPak Flux?
The model is the Flux 1L. When empty it compresses down to pocket size.
Can I use another filter on the Flux bottle?
Yes. It is compatible with 42mm threaded backcountry water filters, including the HydraPak 42mm Filter Cap.
How long does the Flux filter last?
About 1,500 liters.