Aquamira Tactical Frontier Straw Filter - BLU Line Blue. BLU Line Parasite Protection. Uses activated coconut shell carbon to help reduce waterborne chemicals improve water taste and eliminate odors. Tested and certified to remove over 99.9percent of Cryptosporidium and Giardia cysts. Also removes biotoxins such as Microcystin. To use: attach and expand the straw submerge the filter end into the water source and drink through the straw. Miraguard Antimicrobial technology suppresses the growth of bacteria algae fungus mold and mildew within the filter media. Filters 30 gallons. Weighs less than one ounce. Ideal for rucksack go bag or travel kit. Tactical/Military hang packaging. Specifications for Aquamira Frontier Straw Filter: Manufacturer: Aquamira Color: Black Application: Survival Weight: 1 oz Water Filter Method: Straw Cartridge Life: 30 gallons Field Maintainable: Yes Flow Rate: 0.45 liters per minute Package Contents: Aquamira BLU Frontier Tactical Straw Filter Aquamira 67109: Tactical Frontier Straw Filter - BLU Line Blue