The LifeStraw is effectively a straw-mounted water filter, which is approx. 700 liters of water can clean electricity, or use without any external energy. This means that a device worn around the neck of the bacteria known to almost 100% of viruses and filter out 99% of those in need. The effective range of the Swiss-based water filtration Vestergraad Fransen and development company.

The interior chambers of different volume flows through the water, where beads coated with iodine and activated carbon filters for polluted water. Widespread across Africa, but in the Far East and India. Used by tourists, but the most important role in the Third World residents have health care.