What is "chaesang"

Chaesang are woven boxes or baskets constructed from strips of bamboo. The art of constructing such baskets (chaesang-jang) is represented by the sole surviving master craftsman, Seo Han-gyu, who, along with the art itself, is one of the Important Intangible Cultural Properties of Korea.

Historically, chaesang were used by women of the Korean aristocracy to store clothing or jewels. They were constructed by married couples, and were often used to store the items needed for a daughter's dowry.