LIFESTRAW
The LifeStraw is a portable microbiological water purification system that 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. It filters a maximum of 4000 litres of water, enough for one person for three years.
And the best of all is that your purchase it is going to gave an impact: one purchase, one child in need, one year of safe water!