I have a book that is probably going to be requested (it's on a couple of wish lists). It's a paperback book with about 100 pages and is about 8"x11". Should I just wrap it in brown paper like a normal paperback or should I put it in a padded envelope? I guess my main concern is the book getting bent even though I plan to write "Do Not Bend" on the wrapper or envelope. Any other ideas? I don't have cardboard to insert to keep the book "straight" and don't really want to buy some just for the purpose of mailing this book. Any suggestions from someone who has mailed a book like this? Thanks!

I would probably put it in a bubble mailer. 

That's what I was sort of leaning toward. Thank you for your reply!

I recently sent out a large and thin paperback and had the same concern. I sandwiched it between a couple of pieces of cardboard and that did the trick.

You'd be surprised at how much cardboard you probably have - if you want to use some.  Generally, I just wrap all paperbacks in paper (usually brown paper, and lots of tape).  But if you want to make it more rigid, you can cut out a cereal (or other food) box, manilla file folder, etc.

If you use DC, make sure to get the package over 3/4" or rigid since it will probably go first class. There are some requirements that for using DC.

Are there any requirements to use Delivery Confirmation?

Thanks for all of this great info. I had been away from PBS for a while and had forgotten how knowledgeable and helpful everyone is here. Thank you especially for posting the postal regulations for DC - this made me decide to put the book in a bubble mailer to add some height. I'm going to look around for some file folders and other things to give the package some rigidity and a little height.

I'm going to also be posting some craft books that are 8" x 11". I had some old shoe boxes and several free boxes that I got from WM. I just cut them up and will use them to help keep the books from getting bent when mailing. I also have several bubble mailers that I will use.