Aquamira™s Frontier Pro Ultralight Water Filter System is a highly effective water treatment system that fits in your pocket. Drink directly from any water source or fill up a bottle or bladder, attach the Frontier Pro filter and start drinking! Use it as a hanging drip filter, too. The Frontier Pro is effective for up to 50 gallons of water and uses Aquamira™s advanced Miraguard„¢ Antimicrobial Technology to suppress the growth of algae, fungus, mold and mildew in the filter. The Frontier Pro removes over 99.9% of Cryptosporidium and Giardia as well as dangerous microorganisms from source water, without tablets or waiting. It™s compact, lightweight and easy to use.