The Vapur Micro Filter is a lightweight, chemical-free water filtration system that utilizes the most advanced hollow fiber membrane technology. The Vapur Micro Filter safely removes 99.9999% of waterborne bacteria (such as Salmonella, Cholera and E. coli) and 99.9% of protozoa (including Cryptosporidium and Giardia). Together, the bottle and Micro Filter weigh just 2.7 ounces, and the filter is capable of purifying hundreds of liters of water from lakes, rivers, streams and tap water over its lifespan. The Vapur Micro Filter is your new best friend for travel and backcountry adventure. Enjoy the journey.