MSR Trail Base Water Filter Kit

By equipping the award-winning TrailShot Microfilter with the ability to serve as a gravity filter, the MSR Trail Base Water Filter Kit offers maximum versatility for backcountry water treatment.

The TrailShot Microfilter weighs just 5.4 ounces, has a flow rate of 1 liter per minute, and effectively treats up to 1,500 liters of water. Perfect for backpacking, it is effective against bacteria, protozoa, and particulates. Its filter utilizes Hollow Fiber Technology to maximize flow rate while also effectively neutralizing all but the most microscopic threats (NOTE: it is not effective against viruses). A simple squeeze action draws water from the nearest available water source through an integrated hose, and passes water through the filter, allowing you to drink safely immediately and directly from the integrated nozzle. The field maintainable filter is incredibly easy to clean and requires no tools. Should you use the filter frequently enough to have treated 1,500 liters, the TrailShot Replacement Filter Cartridge (sold separately) is available to fully restore the filter’s effectiveness.

Once you've reached camp or if you need to filter water for multiple people or a number of days, you can convert to a gravity filter design. Fill the included roll-top "dirty water" reservoir from the available water source, suspend it, and let gravity take over. Water travels through the Hollow Fiber filter and into the "clean water" reservoir without any hands-on effort. A wide-mouthed cap with a smaller screw-top cap allows easy access to the filtered water. The collapsible reservoirs roll-up neatly when you're ready to get back on the trail.

The total weight of the entire MSR Trail Base Water Filter Kit is just over one pound.