Slant-D ring binder offers superior, professional presentation for a volume of paperwork. It holds 25 percent more paper than the same-size, round-ring binders. For durability and resilience, the cover material and overlays on front, spine and back are made of polypropylene. PVC-free, nonstick poly material resists ink and toner transfer for a clean impression overtime. Superior no-gap rings close securely and resist separation. Steel ringlets are attached to the inside back cover instead of the spine so pages lie flat. Straight post design makes it easy to load content. Binder also features a sturdy chipboard core and two clear interior pockets. Each pocket holds 40 sheets.