The Sawyer Mini Filter is a fantastically lightweight filter unit which comes with a squeezable 0.5 Litre pouch that you can fill with dirty water and squeeze it through the filter into another container - or indeed into your mouth. Backflushing is straight forward and easy. Sawyer says: “A lifetime of water at hand.” Our most popular filter just got smaller and lighter. The Sawyer MINI Water Filter is rated to 0.1 micron absolute, weighs only 2 ounces, and filters up to 100,000 gallons! This award winning system is reliable and easy to use. The MINI can be attached to the included collapsible drinking pouch, inline on a hydration pack, on a standard soda bottle, or simply use the included drinking straw to drink directly from the water source. How is that for versatility? Like all Sawyer filters, a proper backwashing can restore up to 98.5% of the filter’s flow rate. That means no expensive cartridges to replace, ever.