Grayl
GRAYL GeoPress 24oz Water Purifier
$99.95
Best Backpacking Water Filters · head-to-head
GRAYL GeoPress 24oz Water Purifier vs Aquamira Frontier Max Backcountry+ Water Filter
A sourced, side-by-side comparison. Aquamira Frontier Max Backcountry+ Water Filter is cheaper at $29.99. Every spec and price links to its source.
Aquamira
Aquamira Frontier Max Backcountry+ Water Filter
$29.99Cheaper
Which is better: the GRAYL GeoPress 24oz Water Purifier or Aquamira Frontier Max Backcountry+ Water Filter?
On the specs we track, they're closely matched. The Aquamira Frontier Max Backcountry+ Water Filter is the cheaper at $29.99.
See GRAYL GeoPress 24oz Water Purifier on Amazon See Aquamira Frontier Max Backcountry+ Water Filter on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | GRAYL GeoPress 24oz Water Purifier | Aquamira Frontier Max Backcountry+ Water Filter |
|---|---|---|
| US price | $99.95 | $29.99 |
| Brand | Grayl | Aquamira |
| Released | — | — |
| Filtration rating microns | — | — |
| Flow rate lpm | 5.3 | — |
| Rated lifetime (L) | 250 | 3785 |
| Filter media type | electroadsorption + ultra-powdered activated carbon (purifier cartridge) | hollow-fiber membrane with Miraguard antimicrobial treatment (Series IV interchangeable cartridge) |
| Removes bacteria protozoa virus | bacteria, protozoa, and virus (EPA-compliant purifier) | bacteria only on the Backcountry+ cartridge tested here; a separate Worldwide-cartridge variant adds virus removal (rated 120 gal) |
| Weight (oz) | 15.9 | — |
| Field cleanable backflush | No | No |
| Cartridge replaceable | Yes | Yes |
Sources — GRAYL GeoPress 24oz Water Purifier: grayl.com (verified 2026-08-11). Aquamira Frontier Max Backcountry+ Water Filter: aquamira.com (verified 2026-08-11).
What's the difference between the GRAYL GeoPress 24oz Water Purifier and Aquamira Frontier Max Backcountry+ Water Filter?
Where the two actually differ on the specs we track (3 of 8). Matching specs are omitted.
- Rated lifetime (L): GRAYL GeoPress 24oz Water Purifier 250 vs Aquamira Frontier Max Backcountry+ Water Filter 3785
- Filter media type: GRAYL GeoPress 24oz Water Purifier electroadsorption + ultra-powdered activated carbon (purifier cartridge) vs Aquamira Frontier Max Backcountry+ Water Filter hollow-fiber membrane with Miraguard antimicrobial treatment (Series IV interchangeable cartridge)
- Removes bacteria protozoa virus: GRAYL GeoPress 24oz Water Purifier bacteria, protozoa, and virus (EPA-compliant purifier) vs Aquamira Frontier Max Backcountry+ Water Filter bacteria only on the Backcountry+ cartridge tested here; a separate Worldwide-cartridge variant adds virus removal (rated 120 gal)