I designed this because when using these gravity fed reservoirs while camping we found that the filter would often get clogged with sediment in less than ideal conditions. It also would be difficult to fill as the bottom of the reservoir would collapse on itself. 

This is designed to be used with cheesecloth or another similar cloth that can be easily broken down to conserve space in your pack. It is meant to snap together to friction fit the sediment filter mesh of choice so that you can bring multiple mesh replacements if you are on a long trip so that you can swap them out easily.

Designed for the 10 Liter variant of the Katadyn BeFree Gravity filter systems.