The HyperFlow Microfilter uses the latest hollow fibre technology and our most advanced engineering to pack water purification into an incredibly small, easy-to-use format. This opens up completely new possibilities for you to explore the wilderness. With its ergonomic shape, tiny size and tool-free serviceability, this filter is just as suitable for day trips as it is for multi-day expeditions. With a filtration rate of 3 litres per minute, this is the most efficient microfilter ever. Also included: A Quick Connect bottle adapter for direct connection to all MSR® hydration systems and various other containers with a large drinking opening, as well as a modern pre-filter that extends the life of the filter.