No thanks to global warming, the weather on this side of the world has been pretty crazy. It could be extremely hot and sunny one moment, and raining cats and dogs the next. Now this cap with an embedded solar-powered fan might not be totally all-weather, but it comes pretty close. It protects your mug from the harmful UV rays of the run while making good use of all that solar energy to power up the fan at the top of the cap.
It’s available in four colors: black, red, yellow, and blue. So it might not be able to cool you down as much as you’d like it to, given that the fan will probably be blowing air towards your forehead area. But that’s definitely better than nothing, right?
The cap-slash-fan is available from Thanko Japan for ¥1,260 (~$16 USD.)