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. 4" ring capacity holds approximately 835 sheets. 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.