The Art Profolio Advantage by Itoya, sports a fresh contemporary look for the ultimate understatement in presentation and storage. The Advantage features a multi-fold spine that lies completely flat. The PolyGlass pages are fastened solidly to the cover with black anodized metal rivets. 24 PolyGlass sheets allow for up to 48 inserts. As with all Art Profolio brand books, the Advantage is acid-free and PVC-free with European-sourced acid-free mounting paper.