The LifeStraw water filters are designed by the Swiss-based Vestergaard Frandsen. While originally developed for people living in developing nations and for distribution in humanitarian crisis, LifeStraw water filters have gained popularity as consumer products. The LifeStraw is now used as a tool for survivalists and outdoor enthusiasts in addition to being used to help combat clean water scarcity worldwide. LifeStraw water filters can provide clean water without the need for batteries or chemical treatment. All LifeStraw filters are made using hollow fiber membrane technology. Some of them also incorporate an activated carbon component.