The SOLARBAG is the only water purifier that is proven to remove virtually every lethal toxin found in contaminated water, including gasoline, diesel fuel, pesticides, herbicides, toxic heavy metals like lead, arsenic, cadmium, and mercury, and pharmaceuticals like artificial hormones and animal antibiotics;Eliminates 99.9999% bacteria, 99.99% Virus, 99.9% Protozoa, removes heavy metals and destroys manmade chemicals;The SolarBag is a reusable portable water purifier that cleans 3.5 liters at a time and offers the broadest protection of any portable water filter, and is the only non-powered, non-chemical device to exceed the most stringent water quality testing standards from the US EPA and WHO;Nanotechnology based water purifier destroys contaminants instead of merely trapping them, no pumping, sucking or back flushing, simple to use, self-cleaning mesh doesn't clog, reusable 100's of times while producing clean tasting water time and time again;Designed for emergency preparedness, international and remote travel, mission teams and disaster relief, back country camping, backpacking, remote hunting and fishing camps and exploratory groups where clean water is not always available