on 2 May 2011
I was on the look-out for a system that was quick, simple, light and efficient, and Steripen Fits all Filter fulfilled all these categories. It's easy to use and takes up no room at all in your rucksac. Highly recommmended.
on 27 October 2013
I think that this is a useful item when you are outdoors and need to filter water from streams, etc. The real thing is in the filter and I find the plastic accesories a bit bulky. Then, although it is light (around 60g), it could be lighter with a smaller design.