"Sensu" are folding fans. A general fan was present in the world. But everyone didn’t think to try fold alternately a flat fan. Conversely, Japanese thought to try fold, and the folding fan was invented in Japan, with date ranging from the 6th to 9th centuries. The sense is reflected Japanese way as smaller and more elaborately.
Sensu are made of paper and a bamboo framework. One side is decorated with beautiful pictures of scenery, trees, flowers and animals. Sensu are indispensable accessories for traditional performing arts.