All materials and manufacturing are made in Japan. The comfortable opening and closing of cans by craftsmen have been fine-tuned one by one, and since the establishment of 11, the feeling of "Safe and comfortable to use, and we want to create something that you will love with each use." Comes with an inner lid that is made of light shielding tin material (gold) that retains the same usage year round. About the dents on the lid: This is an indication that is attached so that it can be easily matched with a paper wrap-type can. When you close it counterclockwise you can see it as a click sense. Paper rolls are covered by the rolled paper, but the lid is visible from the inside. The fabric can also be seen on the surface of the lid, but this does not affect the use of the product, so please rest assured that you can use it.