This looks pretty neat. Wondering is anyone has one and how well it works. Thanks! https://www.amazon.com/Nemo-Portable-Pressure-Shower-Sunset/dp/B075Y4WRL1
Randy...we have used one for years and they work pretty well. We just boil water and add it to the water that is already in to take a warm shower. Also the Nemo is guaranteed for life. Had a problem with ours and sent it back...they repaired the item and sent it back no charge.
Randy...my experience has been a bit of warmth caused by the sun. Actually the water seems warmer if I leave the Shower inside the cab of my truck for the day and the ambient heat seems to warm it up more than the sun does? I know it sounds weird. The best way and most full proof way is to boil some water and put it in the shower. If you decide to buy one let me know and I will send you a link to the part (funnel) you will need to transfer the boiled water to the shower. Very easy process.