That's odd, I just bought a Sawyer squeeze filer and a couple of platy bags and it seems the threads are different. The Sawyer looks like a standard water bottle, but the platypus bags only have one thread. When I tried to connect the two it felt like I was going to destroy the threads.
I ended up purchasing another platypus hoser and I'll use it with the filter spliced in as a dirty bag.
I ended up purchasing another platypus hoser and I'll use it with the filter spliced in as a dirty bag.