***** **********Best Quality Guranteed. *****Crystal clear cover highlights your title page*****Durable plastic protects bound documents from spills and tears*****Letter size - 8-1/2 x 11 Inches with square corners*****Un-punched covers adapt to any binding system, No tissue interleaving*****Not for use with thermal-binding systems, but compatible with GBC, Fellowes and Trubind Binding Machines plus many more