Kobukusa (古帛紗). A cloth approximately 15.15 cm or 6 inches square, which, unlike the cloth called fukusa, is generally of richer and thicker, brocaded and patterned fabric. Its construction is similar to that of a fukusa. In the Urasenke school, both the host and guests each carry one. If wearing kimono, it is kept in the breast of the kimono. Guests not wearing kimono might carry it in their fukusabasami. The kobukusa is sometimes used by guests to protect the tea implements whilst examining them. Depending on the circumstances, the host may put one out with the tea.
Read more about this topic: List Of Japanese Tea Ceremony Equipment, Cloth Items