Hello! We were using TEI as a source for audiobook cases and sleeves, but as you may know, they are going out of business. We have used Demco in the past and are looking for alternative sources in order to compare durability. If you have recommendations, we would appreciate hearing them! Thanks, Barbara Barbara Beaton Assistant Director/Reference Librarian Milan Public Library Milan, MI 48160 734-439-1240 www.milanlibrary.org<http://www.milanlibrary.org> she/her