I would not recommend this as a primary water supply on a long term hiking trip, but for day hikes and as a secondary water supply, I highly recommend it. It filters out water and lasts plenty long. Also the replacements filters are affordable and easily available at any outdoor store.
I put this in my water bottle puch on my pack and fill it up when i come across a stream or water source and save my pump filter for when i make camp for the night and I'm still alive!
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