Not all of us are lucky enough to get out of our surf and go directly to the shower. That’s not the life we chose.
But what if there is another solution? Fill this shower full of water, leave it at sunlight in your car before you go surf. Nature will make the work for you buddy. You go out, open the tank, and there it is, 13 liters of hot water to clean your wetsuit and you. You just need to pump couple of times to generate enough pressure to make the magic happen.