http://www.cleanwaterkits.com/
Google turned up nothing as far as reviews.
Looks more useful for a stationary filtration set-up. Filters to 0.9 microns and is impregnated with colloidal silver for bacteria. The filter is good for up to 2600 gallons. Can be adapted to 5 gallon buckets too.
Heard of/tried them?
I haven't kept up with water filtration technology, until recently. I have an old MSR Sweetwater filter and really haven't used it much.