They're 3.5" books, for stitching practices.
I have to admit, my stitches aren't neat as other bookbinders, and my works always borderline the sloppy/ messy kind. So I guess why not go all out and make some sloppy and messy (and funky) kind of books that I like?
Hence, the wacky stitches. Still have a lot to improve on, but I'm loving these. :)