johndebc wrote a review of Platypus Platy Water Tank on September 11, 2009
I have a 2 year old 2L bag that is "sideways" to this bag - stands up on the short side. And now I have the 4L bag pictured here. Both work great, but you've got to make sure the zip-lock is tight. I fill it with filtered water by using a Nalgene or Camelbak bottle on my pump and dumping 1.75 to 2L at a time into the bag. It's a little bit of a pain, but works. The handles are OK, but you wouldn't want to have to carry a full tank very far. I have put these in my pack, but the 4L was on a water run that only had water bottles in the pack at the time - no clothes. But neither bag has leaked on me when sealed properly - DOUBLE CHECK!