This is a mask bag for storing Noh masks, Kagura masks, and the like. It's cylindrical, and masks are usually inserted from the bottom. The size is 39.5 cm tall and 21.5 cm wide. It's navy blue with gold embroidery, and the chrysanthemum petal design is red. It's padded, and the lining is purple. The sewing was done by a skilled person, so the stitching on the folded-over parts is very secure.