It is usually used casually in a restaurant or an office. The history of a "OSHIBORI (steamed towel)" is as cotton goods began at the Edo period (it is the Muromachi period according to a report) which generally began to spread. In order to relieve a traveler's tiredness in an inn, a piece of cloth was soaked in water, and given to them. It gave them comfort from long journey and was considered to be a heartwarming gesture.
"OSHIBORI" service is already very popular in Japan. This custom peculiar to Japan is very popular also among an overseas customer.
"OSHIBOR" is the reception culture of the tradition which Japan is proud of. Please actually feel the reception with “OSHIBORI (steamed towel)"once.