I just ordered some of the new-style (blue) Sawyer bags, and there's one problem with them: they don't stand up. There's no "gusseted" bottom, that expands to let you stand them up straight. (CORRECTION: As I discovered, just about the same time Heather posted below, these bags ARE gusseted - it's just well-disguised!)

Since there's no adapter provided to connect them directly to filter, it's kind of difficult to fill the bladder when it's laying on its side.

I solved it - I had a "Platy Link" (the bottle top that has an L-shaped tube fitting inserted through it) that I connected to the filter outlet for now. I emailed Sawyer, and got a rather curt reply: "To connect directly to another pouch use a "tornado coupling" avaliable at most educational outlets." I searched for about an hour on the internet, and couldn't find any. (Well, I found some, but they were industrial and cost at least $200 each.) I'm going to check at the local hardware store - I think I might have seen something like that on a neighbor's garden hose.

(I had also commented on how hard the bags were to fill in a stream, and got this: "A small turkey baster or an additional syringe will solve your low water problems.")

No name signed, no additional information - just two sentences that were borderline helpful. Sawyer's not exactly putting the "service" in customer service.

If I can't find a coupling that works better than the Platy link, I'll probably just pass the filter on to someone with more patience, and stick with my Platypus GravityWorks.