Art Profolio Advantage features a contemporary rigid and lightweight polypropylene cover that lies flat. With enough room for 48 inserts, this presentation portfolio book has 24 crystal clear PolyGlass pages fastened solidly to the cover with black anodized metal rivets giving the Advantage its strength and unique, modern look. Acid-free and completely archival, each pages has thick gauge, black acid-free mounting paper. PolyGlass pages are made in Japan. Black paper made in Italy. Assembled in China. Contains recycled polypropylene.