Yep,
Bought the solar shower,
Tried the solar shower,
Threw the solar shower away....
Lots of limitations, namely..
1. Away all day and settle somewhere for the evening... Supposed to hook up solar shower on the side of your van while driving?? No.
2. If u do heat it up, then don't use too much soap because the excuse for a shower head won't be taking the soap away any time soon.
3. So let's say you do successfully have a shower... Then you have explain to your wife why she has to wait a few hours for her shower. Of course that doesn't actually matter because by the time u have had your shower in the evening, there won't be any sun left in the day to heat the water up.
We do a lot of wild camping abroad and a lake is a far better solution than a solar shower...
Definitely the worst of all the options I have tried so far...
Just my experience, for what it's worth....
P.s. Shower curtain for rear of Cali, €12 from LIDL in Spain....