Read reviews for the PlatyPreserve Wine Preservation Sys. by Platypus as submitted by your fellow paddlers. All of the reviews are created and written by paddlers like you, so be sure to submit your own review and be part of the community!
The bag has a Food-Grade Polyethylene liner and holds 27 ounces but all I care about is that I can pour one bottle of my favorite wine into the thing, squeeze out the air and freeze it with no problem. PLUS, when the wine is gone, I can use my water-filter to fill it with drinking water or simply flatten the bag and it takes no weight or room in my pack or boat. I've used this on a number of trips and never had any problems.