Specification B-QM survival drinking water filter straw, the world's best mini (pen size), light and mobile (easy to carry), is the safe Self-saving survival drinking tool for outdoor use. Can process river water, rainwater, sea water and other types of water from nature into direct drinking water!!! 1. Special features: Four-stage filter system! The water filter contains no chemicals, no batteries and no moving parts that could wear out. 2. Quickly quench your thirst: it features high flow rate 3. Practical to use: Put in water and drink directly! 4.Safest: Remove bacteria and viruses, can make up 99.99% 5. Size: 22.5 per 3CM Property SURVIVING DRINK FILTER STREET: The survival straw design is ideal for cleaning water from rivers, streams, lakes, ponds, valleys and other contaminated sources. A must for any outdoor traveler!!! It can save your life and refresh you again in many unresolved conditions!!! GIVE YOU A BIT OF LIFE-SAVING WATER: Don't reduce such a small gear, it can bring you back to life in various harsh conditions! Even for long-term trips, this tool can help you continue the entire trip. Small but oh! BASIC CLEANING Filters up to 1000 litres of contaminated water without iodine, chlorine or other chemicals. Does not require batteries and has no moving parts. Unlike many similar filters on the market today, Our Rescue Straw removes at least 99.9999% of the bacteria present in the water and 99.9% of the protozoal parasites present in the water and filters to amazing 0.2 micrometers. APPLICATION: Perfect for outdoor travel, sports, fitness, emergency, rescue, outdoor exploration, combat, mining, picnic, backpacking, hunting, couting and emergency preparedness etc Use method: 1. Take up the water with your mouth, suck it up or spin it off after use. 2. Life spam: Can clean up to 1000 litres of water. After reaching the end of life, the straw is blocked Warm tips: Please spit out the first absorbed water Please do not collect salt water or chemically polluted water Do not put in the microwave Try to select the water with less inclusion for longer life Package included: 1 x Filter straw ,1 x Syringe ,1 x Buckle