The MSR HyperFlow utilizes the latest Hollow Fiber Technology in a package so small and so easy to use it will change the way you travel around the backcountry. Its ergonomic design, diminutive size and tool-free maintainability make it just as appropriate on day trips as it is on multi-day excursions. Also included is a Quick Connect Bottle Adapter allowing direct connection to all MSR hydration products and a variety of other "wide mouth" containers and an advanced prefilter to prolong the life of your filter.