Several commercial products share the name Sunshower.
Made by outdoors equipment producer Stearns Inc., the "Sun Shower" is an insulated bag that uses solar energy to heat water held within. Once heated, the user can take a shower, using the attached tubing and nozzle. Models vary, with different volumes, pressurizers, etc. Stearns also sells a variety of Sun Shower branded accessories, such as bio-degradable soap and inflatable shower stalls.
In addition, Dutch company Sunshower B.V. makes a combination shower/tanning booth branded The Sunshower.
References
Sunshower (commercial product) Wikipedia(Text) CC BY-SA