This is kind of neat for under 2 ounces. A new in-line water filter. I have use in-line filters before and found them just fine. _moontrail.com/sawyer-sp120-inline-water-filter.php_ (http://moontrail.com/sawyer-sp120-inline-water-filter.php) Switchback the Filter ************************************** See what's free at http://www.aol.com.