Water Purificaton for Running

I've recently been working on the most ultralight survival set up possible. In the process of this I ran into this product that is cheap modular and very effective. Check it out here.
http://www.getpreparedstuff.com/category-s/1876.htm

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Please watch: "How to use a Signal Mirror"
https://www.youtube.com/watch?v=diE7qUgkLv8
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