Once you get into a kotatsu, it's hard to get out. When I was a child, I would sit under the kotatsu in the winter and watch TV or study, and sometimes I would just take a nap. Kotatsu fleece is so comfortable that you won't want to take it off. The fleece fabric is made to be as thick as possible and is fluffy, warm, and light. Using kotatsu fleece, I made a jacket that can be easily thrown on this winter.