A piece that we at Klevgränd Produktion made for Solvatten.
SOLVATTEN is a portable 11 liter container that is harnessing sunshine to heat and treat water at household level. Put Solvatten in a sunny place, expose it for 2-6 hours and the water will be drinkable. An indicator shows when it is safe to drink. Solvatten can also be used as a solar water heater, providing hot water for cooking and hygiene.