You have to be stark-naked in hot spring(onsen) in Japan.

Onsen robe is great for onsen , sauna.

It can be wrapped around your head while bathing.

You can wash sweat or soapsuds away with it on.

The slit on the side makes it easy to sit in sauna.

https://www.alae-japan.com/english/onsen-robe/

※international shipping(980JPN) is NOT available for this product. Express International shipping with warranty(3,700JPN) is available. If you plan to use it in Japan, shipping to the hotel is recommended. If you wish, please write the hotel name, check-in date, and name of the person making the reservation in the remarks field. Otherwise, please let us know by e-mail.