What's the Japanese name for a "Cel Book"? Where can you buy them?

So I've filled up my cel book (that I bought in 2000) and need to get another one. I'd also like to get an oversized one for my pan cels. Where do people buy cel books these days? I live in Japan and would especially like to buy one locally or at least with domestic shipping in Japan, but searching for ??? ? ("Cel Book") has not brought up anything. What's the word for this? I'd like to get some cel bags too if possible... anyone know the terminology for these? Thanks!

The brand that most people use is produced by a company called Itoya. In the U.S., they're called Profolios. I would look up Itoya on YJ, although they produce a lot of other items, so you may have to go through a few pages to find one. Once you do, since it'll likely be classified into a subcategory, click on that and it should filter out the other Itoya items.

Or you can just go to Daiso and buy a B4 or A3 binder for a couple hundred yen.