The Life Straw Personal Water Filter is a lightweight, compact piece of kit that ensures you always have access to clean drinking water. The internal filter protects from almost all waterborne bacteria & protozoa without leaving any aftertaste. It is easy to clean & carry & aligns with all safety standards. The Life Straw is operated by submersing the end directly into the water source & then being pulled straight through to the mouth, ideal for backpacking, travelling & backcountry exploration.