The book is fine and suits the purpose for which it is intended. However, when it arrived it was not completely inside the postage packet. I asked my postman about it and he said that it had arrived in the sorting office in that state. The book was actually stuck to the adhesive on the envelope and had to be cleaned before I could open it or put it onto my bookshelf.
This is the first time I have had a problem like this, but it might be a good idea, if perhaps you have had some new staff, to ask them to make sure that all books are well inside the envelope before they are dispatched.