Chakin

Chakin (Japanese: 茶巾 "tea towel") is a small rectangular cloth used to wipe teabowls called "chawan". It is a part of Japanese tea utensils. 
White linen is often used, or hemp cloth. The high-quality bleached hemp cloth "Narazarashi" (奈良晒) from Nara Prefecture is historically especially esteemed. The size varies depending on the application and style, but it is often a rectangle of about 1 "shaku" (尺) x 5 "sun" (寸) (30.3 x 15.2cm). The edges lengthwise have a narrow rolled hem finished with overlock stitching. These two hems face opposite sides of the cloth.
It is also used in "Senchadō". 
The "chakin" is folded in a specific manner and placed, when not used, into a small vessel or cylinder that is called "kintō" (巾筒). 