Fellowes 280mic matte black plastic A4 binding back cover (100 units) 54766 combines greater rigidity with an executive and sober aesthetic. At 280 microns thick and made of matte black PVC, these 100 back covers offer excellent stability and firmness to bound A4 documents. The matte black finish prevents fingerprints and maintains an impeccable appearance over time. They are recommended for financial reports, theses, and business proposals.