PressGuards Binder Features a Hinged Tyvek Closure to Perfectly Bind And Cover Presentations, Reports, Manuscripts, Proposals, or Other Documents That Require Loose-leaf Style Binding. Two-piece styling Cover compresses material tightly to reduce bulk. Compressor Closure holds the report close together without damaging the document or the cardboard hinge. Color coding to match the Tyvek hinges give the cover a professional look while helping you on. Cardboard is made from heavy-duty 20 point PressGuard stock with an embossed leather-grain finish. Coated to resist moisture and stains. Closure dimensions are center-to-center (CC). Carton includes single-prong metal zip closure and is made with a high percentage of recycled material.