Enhance the appearance of your refillable binders with these ITOYA Art Profolio PolyGlass pages. These refill sheets can be used with any multi-ring binder or presentation binder. For seamless insertion into a binder these polypropylene sheets feature a uniquely designed rigid spine weld. Each sheet has a thick-gauge acid-free mounting board inside. Standard multi-ring binder holes in these refill pages complete just about any style portfolio. A crystal-clear texture-free surface ensures that your artwork stays protected from smudges fingerprints and scratches. 10 Sheets (17 in x 11 in). Acid-free and PVC-free. Archival safe. Made using PolyGlass polypropylene material. Laser copier toner and ink jet-safe. Acid-free paper inserts