The MSR Hyper Flow microfilter utilizes the latest Hollow Fiber Technology & our most advanced engineering to make water treatment so small & so easy to use, it will change the way you travel in the backcountry. Its ergonomic design, diminutive size & tool-free maintainability make it just as appropriate on day trips as it is on multi-day excursions. Add a filtration rate of 3-liters per minute & youve got the most efficient microfilter ever created. Also included is a Quick Connect bottle adaptorallowing direct connection to all MSR hydration products & a variety of other wide mouth containersand an advanced prefilter to prolong the life of your filter. Features High Flow Rate: Pumps more than 3 liters per minute or one liter every 20 strokes Ultralight: Just 7.4 oz. (209 g) Ultra-small: Just 7x 3.5 in. (17.8 x 8.3 cm) makes it easy to take along even when space is at a premium Field-Maintainable: Can be cleaned repeatedly for flow recovery without tools Super Convenient: Quick Connect bottle adapter lets you filter water directly into a variety of containers, including all MSR hydration products & other wide-mouth containers