By 4Season Outdoor Girl from N. Michigan on 5/30/2008

I have used this for crystal clear winter river water in N. Michigan and for warm, green water dug out from the gravel in a dry river bed in Arizona. The water was clear and tasteless after filtering. The filter is quick and easy to use. We used one filter for five people on one backcountry trip, though one more would have been more convenient. It's a little bulky for hiking but lightweight and a lot less bulky than carrying 3 gallons of water for a trek in the desert!

By JP from Hawaii on 10/14/2007

This is a great, small water filter. There's no reason to mess with chemicals. I used it for a week straight without any problems. I keep it in my military ruck sack for all the fun countries I visit on the job. Its filtered some really nasty water and I haven't gotten sick. I still use some chlorine just incase here in the middle east. The only con is its much slower than the larger filters so be patient.

By Linville Buff from Winston-Salem NC on 7/18/2007

I have only used this filter once in the field so far, however I am impressed. I have used various filters over the years, and prior to this purchase I always preferred the MSR MiniWorks. This filter pumps easier, and faster (even in long life mode).