The LifeStraw water filter is a must-have for any hiker, camper, or traveler. This small, blue straw filters out 99.999999% of waterborne bacteria and 99.999% of waterborne parasites, making it a safe bet for any water source. The microfiltration membrane also removes the smallest microplastics, making it a great choice for those who want to protect the environment. The LifeStraw is easy to use - simply dip it in water and suck - and can filter up to 1,000 liters of water.