Good solar shower feels marvelous at the end of a long hike.
This is the only solar shower worth its money. However, the only bad design flaw is the hose. It doesn't have a locking position that holds it in place and it can easily slip and your water leaks out. I have owned 4 of these over the years. When it fails, it is usually the bottom seam that leaks but this is after several years of use. It has a nice thick plastic wall and heats up the water perfectly. Survives rough camping.
I bought this as a gift for a friend and she is in love. She says that it have a thermometer to know how hot it's the water. She usually boils the water and then put it in the bag, the bag it's of a really good quality. It is holding great!