GRAYL Ultralight Water Purifier [+ Filter] Bottle Ideal for global traveling, outdoor adventures, emergency preparedness, hiking, backpacking, camping, fishing, survival Fast and easy-to-use, simply Fill. Press. Drink. No sucking, squeezing, pumping, prolonged waiting, ultraviolet bulbs, or batteries Award winning [ONE PRESS] design makes clean, purified drinking water in only 15 seconds from virtually any fresh water source in the world Removes 99.9999% of viruses (e.g. Hepatitis A, SARS, Rotavirus); 99.9999% of disease-causing bacteria (e.g. E. coli, Salmonella, Cholera); and 99.999% of protozoan cysts (e.g. Giardia, Cryptosporidium) Filters particulates (e.g. sediment, silt), many chemicals (e.g. chlorine, benzene) and heavy metals (e.g. lead, arsenic); zero aftertaste, eliminates bad odors, improves clarity and flavor <span class="a-text-bold">International Travel: </span>The GRAYL Ultralight Purifier is the ultimate travel companion where water isn&#039;t safe. The Purifier fits in standard backpack side pockets and passes through airport security in your carry-on. <span class="a-text-bold">Outdoor Adventures:</span>Whether your passion takes you into the high alpine forests, fly fishing on a gentle stream or just on a hike in your nearest state park, GRAYL makes safe, clean water easy. Don&#039;t worry about bacteria or protozoa - or nasty chemicals that may be leaking out of that abandoned mine upstream! <span class="a-text-bold">Emergency Preparation: </span>Hurricanes, tornadoes, earthquakes (oh my). When disaster hits, municipal water systems are the first to go down. Be prepared!  Each GRAYL purifier comes equipped with a replaceable purifier cartridge that lasts for about 40gal (150L), enough for 2-3 months of drinking water. Replacement Cartridges can extend the life of your purifier indefinitely! <span class="a-text-bold">Technology #1 -</span>Two layers of non-woven ceramic fiber, which providea rugged and durablebase. <span class="a-text-bold">Technology #2 -</span> Positively charged mesh of ions (aka - little magnets) that grab onto impuritiesas they flow by, using a scientific property known as &#039;ion exchange&#039;. The positive ions in the media bind to negative charges on pathogens and chemicals. The impurities stay inside the cartridge and clean water flows through! <span class="a-text-bold">Technology #3 - </span>Activated Carbon absorbs flavor/odor and many chemicals and heavy metals, so your water safe and tastes great.