Filter is Great, but Gray water bag needs work.
"I was finally able to put the new filter system in use in Yosemite. This filter itself is lightweight and comes with a lot of options to connect to bottles, hydration bladder, etc, but the gray water bag is frustrating to use when trying to fill it. The small opening to fill the bag doesn't seem to be an issue, if you are refilling it from a running stream, but trying to do it from a lake, is painfully slow. I don't know why they couldn't have made the bag with a "Big Zip" which is they have already for faster filling. Knowing what I know now, I would never buy the entire filter/bag system. I would simply buy the filter and pair it with a CNOC VextoX 28 mm thread bag. It's too bad, this could have truly been a 5 stars filter/bag combo. Also, if they had designed the bag with a Big Zip, it would avoid all the previously stated issue of drying the bag out after use."