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. Heavy board material in the front and back covers supports the cover. Ringlets are attached to the inside back cover instead of the spine so pages lie flat. Binder design provides increased capacity in same shelf space over similar-sized, round-ring binders. Binder also features two opaque interior pockets.