If you go to Japan this summer, take the opportunity to acquire a pair of HYDRO-TECH shoes.
It seems that in the soles of shoes Hydro-Tech filters are equipped with high technology that can drive the moisture and heat, keeping your feet cool … And that without having to wear sandals. Crocs in public. Of air-conditioned shoes, you know.
Useful when it is hot and you are a businessman stuck in meetings with key customers throughout the day.
(No, it does not appear to be equivalent for women, since most business women wear open shoes anyway.)