Sparco Slant Ring View Binder, 5 Inches Capacity, 8-1/2 x 11 Inches, White (SPR62473) Slant-D Ring Binder features thick vinyl and double-polished, wrinkle-free overlays that resist toner transfer Quality no-gap rings close securely and resist separation For durability and resilience, the cover material and overlay are made of polypropylene