With limited options on the market, I purchased this. Immediately the shocking design problems are obvious, the tube from the bag kept slipping off leaving water flowing everywhere, so I had to gaffer tape it on.
It also leaks from the shower head (when switched to "OFF") so after leaving on the dashboard in the sun to warm the water, it resulted in a nice puddle on the floor after a few hours....
Also having the tube attached to the bag about 5cm from the bottom means there is always a 200ml or so of water remaining in the bag which won't come out unless you take the tube off and squeeze it empty which is quite awkward to get it completely empty. Surely a rife breeding ground for legionnaires disease when you are on the road for weeks on end? Why is the tube not attached at the bottom like the Yellowstone product?
Yes the water warms up sufficiently (after a long summers day), but I think I shall be creating another method once the water has warmed to transfer it to another vessel for use.