Sawyer Products SP124 Mini Water Filtration System Gift Package, 4-Pack, Multi-Color Ideal for outdoor recreation, hiking, camping, scouting, domestic and international travel and emergency preparedness High performance filter fits in the palm of your hand; weighs just 2 ounces; 0.1 Micron absolute hollow fiber membrane inline filter Attaches to included drinking pouch, standard disposable water bottles, hydration packs, or use the straw to drink directly from your water source Removes 99.99999% of all bacteria, such as salmonella, cholera, and E.coli; removes 99.9999% of all protozoa, such as giardia and cryptosporidium Filter rated up to 100,000 gallons; includes 16-ounce reusable squeeze pouch, 7-inch drinking straw, and cleaning plunger