Comments about Platypus Platy Water Tank:

I usually use mine when backpacking with my kids. I carry it empty and flat, then I let the kids filter water into it when we get to our campsite. It's perfect for this application and because of the large volume does not need to be refilled often.

Recently, we went on an overnight trip atop some cliffs and had to bring all of our water with us. I was skeptical about the zip top's ability to withstand the pressure inside a pack, so after filling and testing it, I placed it in two ziplock bags. It didn't leak a drop! I was impressed! And the water tastes much better than it does from those larger, cheap plastic carriers.

Comments about Platypus Platy Water Tank:

Got this for kayaking, as it's collapsible and we needed to carry lots of freshwater. Handles make it very easy to carry. The spout is very easy to pour, though I wish they would have attached the screw-on top to the spout somehow. It's best use is as a collapsible bucket; very, very handy (we used it to bail out a kayak) but not indispensable. The top seal is kind of tricky, and it easily pops open if it's not sealed perfectly. And it's hard to tell if it's sealed perfectly, even when you invert it, as suggested. So, not as reliable as one would like when freshwater is precious. But, over-all, a very versatile, sturdy bucket.