Whether you go camping, hiking or do any kind of traveling, the LifeStraw is a must have. It is an award-winning personal water filter that makes contaminated water safe to drink. For travellers that might be drinking from rivers, lakes or other suspect water sources, LifeStraw is an ideal water filter – very durable and lightweight (2oz). It uses no chemicals or batteries, has no moving parts and can filter up to 1000 liters of water.

It will not filter heavy metals or viruses, and will not desalinate water but it removes virtually all the bacteria (99.9999%) and protozoa (99.9%) and reduces turbidity, filtering down to 0.2 microns.

And at that price, no one can't afford not to have one in their emergency preparedness kit.