The page protectors that are compatible with this album are:
Pioneer 12 x 12
This album is just beautiful and I specifically chose it for the expanding spine. I'm planning to use this for my wedding pictures and love that I can add as many pages as needed. The champagne color and scroll design is really pretty.
While I agree that the cover is lovely, it expands and all that jazz, the "12x12" page covers are more like "11.5x11.5" and it is bloody annoying. At first I thought it was my pages. Perhaps they were...more embellished than normal pages, so I got out sleeves from another book. My pages fit fine in the second book's covers, and when I superimposed the covers the compare, the sleeves from my new scrapbook were NOTICEABLY shorter.
Other than that, it's lovely.