>>77807Been using The Sawyer for some time now, although you might consider making a couple of after-market pieces for it.
Left to right:
Tornado tube- will allow you to back flush with a clean bag or bottle.
Top off a used bottle with the end capped- This will allow you to transport the device and it will not leak into your pack
Top- The top that comes with it is a two piece and the clear plastic protector over the nipple can get lost grab a one piece off another bottle.
The part to prevent leaking has a couple of how to vids on you tube.