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 7x3 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 quick connect bottle adapter water filters directly into a variety of containers including all msr hydration products