Introducing MSR's latest creation - its lightest and smallest pumping filter. At just 7.8 oz., it's MSR's most compact filter, making it ideal for the ounce-conscious backcountry camper. It's fast too. In fact, it pumps 2.75 liters per minute. Just screw the Quick-Connect™ replacement cap onto a Nalgene® bottle or any other 63mm threaded opening, and after just 30 seconds of pumping, you have yourself a bottle full of filtered water. And tool-free disassembly makes for easy cleaning.
Available:

Microfilter

Replacement Cartridge (not shown)

Gravity Kit