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.