"Enhance The Appearance Of Your Refillable Binders With These Itoya Art Profolio Polyglass Pages. These Refill Sheets Can Be Used With Any Multiring Binder Or Presentation Binder. For Seamless Insertion Into A Binder, These Polypropylene Sheets Feature A Uniquely Designed Rigid Spine Weld. Each Sheet Has A Thickgauge, Acidfree Mounting Board Inside. Standard Multiring Binder Holes In These Refill Pages Complete Just About Any Style Portfolio. A Crystalclear, Texturefree Surface Ensures That Your Artwork Stays Protected From Smudges, Fingerprints, And Scratches.10 Sheets (9 In X 12 In),Acidfree And Pvcfree,Archival Safe,Made Using Polyglass Polypropylene Material Laser, Copier Toner, And Ink Jetsafe,Acidfree Paper Inserts,Available In A Portrait Format."