I use these cover in my business and they are just what I need to hand out to people who attend my seminars. It is easy for them to keep all the material that is need for the seminar. They also have a place to put their notes that they want to keep. It also is a good piece to promote our next seminar as a reminder. I use a stick on piece on the front of the cover.
I used these to hold sheet music for high school singers. Bought them in black and stapled the music in the center for them to hold during a concert. Very nice construction and a rich black color.