Answer
Oct 29, 2025 - 10:58 AM
A: For backpacking, the best water filter is one that’s light, effective, and easy to use in any environment. When you’re miles from the nearest trailhead, every ounce counts—and so does reliable protection.
✅ The Smallest and Lightest: FortiFilter™ by Roving Blue®
The FortiFilter™ is currently the smallest and lightest medical-grade ultrafilter in the world, weighing less than 1 oz (23 g). That’s less than half the weight of Sawyer’s lightest squeeze filter (around 2 oz). Despite its tiny size, it provides powerful 0.01-micron filtration, removing bacteria, protozoa, and viruses.
Just fill your bottle or cup with source water, sip through the mouthpiece, and blow back to clear the filter—no pumping or squeezing required.
🔒 For Maximum Safety: Pair It with the Ozo-Pen®
For backpackers treating natural surface waters (streams, lakes, or unknown sources), the safest combination is ozone + ultrafiltration. Pair the FortiFilter™ with the Ozo-Pen®, Roving Blue’s electrolytic ozone water purifier.
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Ozone purification inactivates bacteria, viruses, and cysts that filters can miss.
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It also improves taste and odor naturally—no chemicals used, no chemicals left behind.
Together, they give you the best of both worlds: ultralight filtration and the most powerful portable purification available.
🏕 Why Hikers and Backpackers Love This Setup:
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Smallest and lightest total system you can carry.
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Chemical-free purification—safe, sustainable, and fast.
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Peace of mind for backcountry or international travel.
Bottom line: For backpacking, nothing beats the FortiFilter™ for weight and simplicity. Pair it with the Ozo-Pen® for the safest, most complete water purification system available today—ozone plus ultrafiltration.
Source: Author and subject matter expert, Marianna "Yana" DeMyer
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