The Tactical Frontier Straw Filter is a pocket-size power house ready to provide safe and reliable backcountry water. The compact, ultralight design makes it one of the easiest portable water filtration solutions available. Weather through the worst with the Tactical Frontier Filter Straw. This ultralight and compact water filter is certified by IAPMO to remove Cryptosporidium andGiardia to EPA standards. It also reduces chemicals, chlorine, taste and odors and is certified lead free to NSF/ANSI-372 standards. The Tactical Frontier Straw is the most affordable survival straw available.