MSR Hyper flow Microfilter Water Filter - At about half the size and weight of a standard water filter the MSR HyperFlow is ideal for everything from day trips to multi day backpacking expeditions. Easy tool free maintenance ensures that your filter delivers top performance day after day. HyperFlow filters at a rate of 3 liters a minute and includes a Quick Connect bottle adaptor for directly filling most wide mouth bottles. An attached pre-filter removes most large particles from the water preserving your filter life. Made in the USA. Weight: 7.8 ozWidth: 3.5 inLength: 7 inFilter media: Hollow FiberFilter pore size: 0.2 micronsFlow: 3 liters per minFlow (strokes per liter): 20Cartridge life: 1000 litersField cleanable: YesField maintainable: YesWater Bottle Adapter: BPA Free