Butie 700ML Soft Flask with Water Filter for Hiking & Camping - 0.1 Micrometer Hollow Fiber Membrane for Clearer, Better Tasting Outdoor Water(Blue)

["Durable Portable Water Filter: SGS Certified, Test Report XMF25-0008210-05. Our BPA-free water purifier camping is built for durability in rugged conditions. It integrates a 0.1-micrometer hollow fiber membrane that blocks over 99% of harmful, making it an effective water filter for hiking and outdoor use.","Fast Hydration from Natural Sources: The water filter's wide silicone bite valve delivers a high flow rate for quick drinking. Certified by BACL with test report number: 2506W73033A, it is perfect for staying hydrated directly from rivers and streams on your hiking, camping, or trail running trips.","Ultralight & Manually Packable: Designed for minimal burden during long activities, this soft water bottle is ultralight and can be manually rolled up to an incredibly compact size when empty, taking up hardly any space in your pack.","Simple Universal Use: An essential camping & hiking water filter. The standard 42mm filter port ensures easy use and compatibility. Just fill, attach, and drink—gravity does the work. After every 5L, shake and rinse to maintain flow.","1000L Lifespan & Filter Integrity Check: Each filter is rated for 1000 liters. Important: Never use with saltwater or in freezing temps. To check: Blow into the water outlet. If the bottle inflates, the filter is damaged and must be replaced."]