The plastic bags that cheap wine comes in is Rogue river, class 5-6, over Rainey Falls, sucked 10 feet into the vortex tested.

A few years ago I took a two week river trip with a buddy. We bought three boxes of wine.

We nixed the boxes, and the wine bladders were just strapped to to raft with all our other stuff.

At the end of the trip, we we both surprised how much abuse those bags went through, and not even a small leak.

Now--the raft was another story.