I usually don't worry about taking a shower when backpacking. I like to go where there's lakes or rivers and go skinny dipping.
Natures way ! Just don't use soap since it pollutes no matter where you use it or claims by manufacturer.

I just got a Klymit insulated static v lite pad and a pump made by Kylmit. Looking forward to trying it out soon.
Will report back. It took about 20 breaths to fill pad so will be interesting to see how the light weight pump works. (For some strange reason the older I get the less air comes out of my lungs !)