Outer Dimensions: Length 12.2 x Width 8.7 inches (310 x 220 mm); Sheet Thickness: 0.08 inches (0.20 mm); Cover: Polypropylene; The definitive version of the bookbinding tool! Perfect file cover for submitting projects and reports. A4 oversized size is slightly larger than the size of documents. Green Purchasing Law Compliant Product ; Product listed in the Green Purchase Network (GPN)