Itoya Art Portfolio Polyglass Refill Pages (Set of 10) Size: 11" x 14" Professional quality refill pages for presentation binders and multi-ring binders with standard, multi-ring binder holes. Crystal clear polypropylene material with unique rigid spine weld for easy insertion into binders. Photo, toner and inkjet-safe, acid-free, archival safe Includes acid-free black paper insert in every page 11" X 14" Itoya Profolio PolyGlass refill pages (10 sheets/pack)