First Need Walter Filter/Cartridge

By Allen Ranked #539 - Trail Running Hydration September 1, 2003

I recently returned from a 21-day backpacking/camping trip. I couldn't have been more pleased with the First Need Filter. We drank from several water sources known to be contaminated with giardia and other critters. The First Need filter worked excellently. Although a little expensive, the quality and peace of mind more than make up for it.

View Details: First Need XL Water Purifier Replacement Cartridge

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