Advanced 4-Stage Filtration - Exclusively designed with 4-stage filtration technology, the personal water filter ensures that the water first passes through the pre-filter screen, PP cotton fiber, coconut shell activated carbon, and, finally, through a 0.1 micron hollow fiber UF membrane. Therefore, our portable filter straw will remove the minimum 99.999% of harmful substances.
 Water Drinking Outdoor Survival Kit: Our water filtration straw is perfect for outdoor recreation, hiking, camping, backpacking, which is also your good companion for military, exploration, domestic and international travel, natural emergency preparedness . You will always have access to clean water in any wild situation.
 Portable size and high capacity: Equipped with a carrying strap, the outdoor water purifier is 6.7  in long, 1.2  in diameter, and weighs only 0.18  oz, you can take it anywhere you want comfortably. While the drinking water filter can last a long life, it will filter up to 1,500 liters.
 Safe & Eco-Friendly Materials - Our tactical survival kit is designed to reduce contaminants and enhance taste, therefore you will gain access to safe drinking water in hurricanes, floods, drought, and other emergency situations.
 NO ASSEMBLY AND EASY USE: It is ready to use, just insert this camping water filter directly into water sources, or attach it to other water bottles or hydration packs. After each use, simply blow out of the straw for easy washing to extend its life cycle.