Aquamira Frontier Pro Filter
Here's the cleanest, easiest, most compact Water Filter System in the world! It's ultralight (just 2 ozs. dry) and compact (1 1/4" diam., 5 1/2"l.) making it about half the size of a typical filter. The Aquamira Frontier Pro Filter to drink from any water bottle, cup, hydration system or directly from your water source. The Frontier Pro Filter will remove 99.9% of Giardia, Cryptosporidium and other contaminants down to 3 microns.