2020-04

I looked for a portable cooler with a proper cold wind.

With the intense global warming, portable fans have been popular since about the year before last, but as a hot one, th...

A handy cooler with a cold wind, which is different from a handy fan

I would like to post ideas, inventions, and ingenuity that are useful in everyday life. In the opposite way to put t...

タイトルとURLをコピーしました