Itoya"s Art Profolio EXPO Presentation/Display Books are value priced to distribute and leave behind. They feature a durable polypropylene cover (to resist moisture and dust), clear, top-loading pocket sheets (will not stick to copier toner), and thick gauge black, acid-free mounting paper. They are archival, acid-free, and PVC-free. Each EXPO portfolio has 12 pages for 24 views.