Very Small

So this may be bad communication. But when I saw 5x9 I thought that it would be the perfect size. I mail a LOT of books. When I got them however not so much. In hindsight the actual “hole” part is only about 3 in and no book is being mailed in that. Very disappointed because I have a lot of these now that I don’t really know how to use. But the quality is amazing. I love the design.