H2O Survival Straw-Personal Water Filter Straw & Bag-Successfully Battle Tested in the Philippines Typhoon-Now Available in the US! Hiking/Emergency/Disaster Personal Water Filtration Straw. 3 Stage Filter Process Filters out 99.9999% of Bacteria greater than 0.01 microns. Makes Contaminated Water Drinkable Instantly! Don't Be Fooled by Short Term Solutions, This Straw can Filter 400 Gallons! 2 YR Warranty. See our Water Filter Straw Comparison Chart. Survival Tips e-book included!