Millbank Bag U.S.A. (How to & use of) the original pre-filter

Millbank USA: http://millbankbagsusa.com/index.html The millbank bag is used by those who like to camp, go hiking, hunting and bushcrafting. It will pre-filter water from lakes, streams, ponds and other water sources. Particulate matter such as mud, silt or any floating debris is caught in the canvas material of the bag. This will extend the life of any kind of modern filter device that you use to purify your water and make your cooking or drinking water much more enjoyable.