LifeStraw is an award-winning, easy to use and ultra-lightweight water filter, which enables you to safely drink water from contaminated water sources. This makes it ideal for use outdoors and in emergency situations. LifeStraw is one of the most advanced and durable personal water filters available today. The LifeStraw filters a minimum of 1,000 liters of water and removes a minimum of 99.9999% of waterborne bacteria and 99.9% of parasites, and it does not contain any chemicals, batteries or moving parts. Buy LifeStraw.