Features： 1、High-Performance: Built-in a hollow fiber membrane to effectively remove 99.99% of impurities in the water, allowing you to enjoy hygienic water. The straw can purify 1000L of pure water for people\u0027s water needs. 2、High-Quality: Made from ABS that ensures safety for all users, wear-resistant, and long-term use. Our survival filtration straw is designed to reduce sediments and improve taste, help get pure drinking water. 3、Easy To Use: It is ready for use, you just need to insert this camping water filter straw directly into the water sources. After each use, simply blow out of the straw to backwash it easily, in order to extend its lifespan. 4、Portable Size: Designed with a compact size, the survival water purifier is 14.2cm/5.59in length, 1.8cm/0.71in diameter, and weighs just 0.74oz, you can take it anywhere and save space in your pocket or backpack. 5、Designed for Outdoors: A fantastic tool for multiple purposes like backpacking, hiking \u0026 camping gear, travel accessories, and also a good partner for fishing, hunting, and natural disaster emergency preparedness. Specification： Adopt upgraded adsorptive technology to ensure the water is free of impurities and safe for drinking. Each filter can purify 1,000L of water before it needs to be replaced, with a long service time, eco-friendly, and cost-effective. Using our survival straw, you can drink pure water anywhere and at any time. Ultralight and enduring, take it anywhere for your backup hydration, emergency, or on-the-go needs. Suitable for camping, hiking, traveling, and other activities. Package List： 3*Water Filter Straw