The Sawyer Products SP128 Mini Water Filtration System is a great way to make sure you have clean water wherever you go. This little device can filter out 99.99999% of all bacteria, including E. coli and salmonella, as well as 99.9999% of all protozoans, including giardia and cryptosporidium. This makes it ideal for outdoor recreation, hiking, camping, scouting, domestic and international travel, and emergency preparedness. The high-performance 0.1 Micron inline filter fits in the palm of your hand and weighs just 2 ounces. Plus, every MINI unit is individually tested three times to ensure reliable performance.