ITOYA 18 inch x 24 inch Original Art Profolio Presentation Book/Portfolio- for Art, Photography, and Documents Fresh contemporary look for the modern artist, photographer, student or professional. Durable polypropylene cover-acid-free and archival safe. Stylish storage and portability in one portfolio. Exclusive crystal clear PolyGlass polypropylene pockets display your work crisply and clearly. Made of durable black polypropylene with black thick gauge mounting board page inserts. Multi fold spine lies flat to showcase your work and the portfolio contains 28 sheets so you can add 48 inserts.