Overview: From Lifestraw: “The LifeStraw Personal Water Filter Line contains no chemicals, no batteries and no moving parts to wear out. It features a high flow rate and weighs only 2oz. It is perfect for the Ultralight backpacker, camper, hiker, traveler, boy scout, hunter or for emergencies. Unlike many similar filters on the market today, LifeStraw has met EPA standards for water filtration in independent testing. With the LifeStraw you can drink directly from puddles or streams, or you may find it easier to scoop water with your wide-mouthed water bottle and drink from it using the LifeStraw.