If you travel to Tokyo, I recommend you to visit the Fog Linen store.
It is located in the Shimokitazawa area and is the only store of Fog Linen Work, and also their office.
Here are a few impressions from the store and the building. I was lucky to travel to Japan last year and visited the store. I loved every detail of it. The soft light coming in, the shelves, the thoughtful display of the items. The building has been built by Yumiko Sekine's boyfriend, who is a talented architect.
Enjoy the visit!