Featuring the Itoya exclusive crystal clear Polyglass pocket sheets, the Advantage line sports a fresh contemporary look for the ultimate understatement in presentation and storage. Using a special polypropylene material incorporated in a rigid, yet lig htweight black poly cover for added durability, these books are easily mobile. The multi-fold spine will lie completely flat for presentations and 24 pages allow for 48 inserts. As with all Profolios, the book is acid- free and contains acid-free black mounting paper.