But it's enormous for a water bladder. I go big for camping, but this is serious survival gear. The bladder is made out of PVC (vinyl-plastic?). It's not rubber but it is thick (double-layered). A few years ago, we had an ice storm in Texas that froze all our pipes for a week. I had to take the 4-wheel drive to a Primo water station and refill water jugs every day. We only had 22 gallons of water jugs. You can imagine, they were out-of-stock everywhere. I ordered this because I could fill it up in the bathtub and I would have at least four days of water stored. Add back the 22 gallons of water jugs, and that's five days of storage. I have a 48x24\" wagon, but it only holds 800 pounds, so I could safely fill about 80 gallons. It would be difficult to pull. Too hard. I wouldn't take this anywhere in anything but the back of my truck. I need a case to keep it from rolling around and sliding. That's doable and actually probable. I like this for emergencies and there are many things I haven't imagined. I will probably buy another for the other bathtub. For me, it's too large for camping. However, it's a super tool (multifunctional). 5 stars.