The ultra light and compact Aquamira Frontier Pro filter easily slips into a day pack, shirt pocket or travel luggage and is always ready when you need it. FILTRATION TECHNOLOGY All Aquamira filter systems use the "torturous path" method of filtration, designed to provide greater effectiveness than common thin-walled fiber filters. The tiny intricate pathways in the filter trap 99.9% of harmful Cryptosporidium, Giardia, and other pathogens, including waterborne insect larvae and many bacteria such as E. Coli. The activated carbon reduces waterborne chemicals and improves water taste while Miraguard&reg Antimicrobial technology suppresses the growth of bacteria, algae, fungus, mold and mildew within the filter media. Connect to almost anything using the universal connectivity system. The Frontier Pro filter will connect directly to any water bottle with a 28mm opening such as a Platypus or standard spring water bottle. Using the tube connection feature you can connect to the drink tube of your hydration system, or drink from any open container or water source. Removes >99.9% of Giardia & CryptosporidiumCapacity = 50 gallons (200 Litres)Weight: < 2 ounces dry (56.7 g)Length: 6.75 inches (17.14 cm)