Originally just a plastic cigar-sized portable filter, LifeStraw purifiers are now available in sizes perfect for personal, family, group, and community use. LifeStraw uses hollow fibre microfiltration technology to purify water by removing potential pathogens like typhoid, cholera, dysentery as well as the parasites. The personal straw size works as soon as you suck up water from a source, rendering up to 1,000 liters of water fit to drink without electricity or additional attachments, while the family and community filters purify larger quantities of water through a larger pitcher.