Advanced Membrane Technology:With ultra filtration membrane,Our straw water filter has a filtration accuracy of 0.01 microns and can filter out 99.9999% of harmful substances to ensure your drinking water safety.Removes various of metal substances, eliminates strange smell in water, no chemical smell. Eco-Friendly, Lightweight and Portable: Our camping/hiking water purifier is up to 1500 liters (396 gallons) of water purification, thats a replace up to 3000 plastic water bottles, very environmental friendly. With 8.3 x 1.2 portable size and 2.1oz net weight, this survival gear really takes up little space and is convenient and easy to store in your bag, hold in your hand or hang on your neck, perfect for outdoor activities. Easy to Use and Clean: Put the straw into water, blow air into the straw and suck water tightly. The flow rate is about 550ml/min. You can connect the camping straw filter to bottles, water bags or directly to the lakes, rivers, streams or other water resources. After use, simply blow out of the straw to keep it clean and prevent it from clogging. Special Bottom Design:The bottom of our water filter is designed with a thread, which can be used for beverage bottles with international standard mouths, and can also be connected with a silicone tube for your convenience. A Must Have for Any Adventures: Outdoor water purifiers are essential items for anyone who likes to spend time in the outdoors, whether youre camping, hiking, mountain climbing, hunting, trekking, backpacking, biking, boating, car rides, outdoor trips and wilderness adventures. Your kit can never be too prepared. Specification: Filtration Capacity: Up to 1,500 liters or 396 gallons Flow Rate: 550 ml / minute Filter Length: 6.75inch Filter Diameter: 1.18inch Filter Net Weight:0.13LBS Material: CE certified and BPA free ABS Features: Made of BPA-free, CE-approved food grade materials Removes 99.9999% of waterborne harmful substance. Filters smallest microplastics down to 0.01 microns and reduces turbidity. Chemical free, provide at least 1,500 liters of clean and safe drinking water from any source like river, lake, stream. Lightweight and compact emergency water filter system. Cost-effective alternative to disposable water bottles. Soft caps protect the straw free from dust and stains. With a rope for convenient carrying. Perfect for outdoor adventure, emergency preparedness, camping, hiking,etc. 4-stages Filtration System Stage 4: Removes 99, 9999% bacteria and protozoa, making the water suitable for drinking. Stage 3: Adsorbs and removes odor, volatile organic compounds, and easily deformable colloid, improve water taste. Stage 2: Filters out small impurities such as small sand particles and most waterbrone worm eggs. Stage 1: Provies the first defense against large sediments, removes lots of impurities in water. Filter Material: 1. Medical Hollow-fiber UF membrane 2. Medical PP Cotton 3. Coconut shell activated carbon 4. Antibacterial beads What to Keep in Mind: The first sucked the water should be spitted out. Do not use this product with salt water or chemically treated water. Do not put it in water that is above 40. Store it dry conditions at temperature below 30.