Filter Capacity: Filters up to 2000 liters of contaminated water into potable water without iodine, chlorine or any other harsh chemicals. 0.1 micron hollow fiber membrane in-line filter.green High Filtration Performance: Portable water filter removes 99.999% of bacteria and protozoan parasites down to 0.01 microns, exceeding EPA water filter standards. Survival water filtration is an essential tool for hiking, camping, travel and emergencies. Portable and Ultralight: Weighs only 65g, the portable length is only 20cm, and the diameter is only 3.3cm. With metal buckle and lanyard, you just need to use and continue your travels or outdoor activities. Simple to use: Can be used directly in rivers, streams, lakes. Equipped with an elongated straw, so you can also connect it to hydration packs, bottles and tubes to drink clean water. (Note: seawater, soft drinks and industrial waste water cannot be filtered). Package contents: portable water filter, straw, metal buckle, lanyard, user manual.