Originally Posted By: Blast


......Flexi-bottle: I have one and tried to make it fit but the hard plastic mouthpeice took up too much space. I'm still looking for something stronger than the Ziploc freezer bag. I'm thinking of trying to make something out of the line of a wine-box.....

-Blast


I agree. So I took a 1L platypus bottle and cut the screw top off so it will fold rather flat. No, you can't seal it, but it stands by itself is much more durable than any ziplock bag. And fold over the top and one of the black HD paper clip thingys and it is somewhat secure.