We purchased two of these after we had a massive tornado hit town last year.  We didn't have power for over a week.  It was late April and not quite warm enough to really warm the water without the help of the sun.  We have a lot of shade around here but we managed to move the packs to keep them in the sun.  The directions were not easy to understand and we had a really hard time figuring out how the nozzle worked.  They still leaked some when we put them in the sun, but no rips in the seams and it really did make life a little better while we were without hot water.

HOWEVER, the SMELL of the item infuses the water.  You get that plastic/PVC smell and therefore, it will transfer onto the skin.  But it is better than smelling like BO.

I would recommend this for situations like what we were in, but I don't know if I would trust it on the campground.  Like I said, it leaked out of the nozzle and wasted water.
We purchased two of these after we had a massive tornado hit town last year. We didn't have power for over a week. It was late April and not quite warm enough to really warm the water without the help of the sun. We have a lot of shade around here but we managed to move the packs to keep them in the sun. The directions were not easy to understand and we had a really hard time figuring out how the nozzle worked. They still leaked some when we put them in the sun, but no rips in the seams and it really did make life a little better while we were without hot water. HOWEVER, the SMELL of the item infuses the water. You get that plastic/PVC smell and therefore, it will transfer onto the skin. But it is better than smelling like BO. I would recommend this for situations like what we were in, but I don't know if I would trust it on the campground. Like I said, it leaked out of the nozzle and wasted water.