Campcraft Outdoors' signature canvas in a 2 Liter size bag that has been triple stitched at the seams and includes a brass grommet and paracord hanging lanyard. This bag is used to pre-filter your water from natural sources which will reduce the sediment and debris you collect in your water bottle or pot. By using a pre-filter bag such as this you will extend the life of your regular water filter.
To use: pre-soak bag for several minutes to expand the cotton fibers. Hang the bag and fill with water source, collect water as it filters through bag, then BOIL the water or use your preferred purification method.