CLEAR VIEW COVERS – These crystal-clear covers put your work center stage. Sturdy plastic covers allow you show off your title pages and creative design skills. 6 MIL POLY MATERIAL – These strong covers are made from tear-resistant polypropylene to protect your projects. Covers are 6 mil thick, to keep your work clean. UNPUNCHED FOR EASY USE – Unpunched covers can be used with any binding spine, in any binding style that suits your needs. ROUND CORNERS – Covers with gently rounded corners give a stylish, streamlined image. Covers measure 8-3/4" x 11". 100 PER PACK – A pack of 100 covers makes an excellent addition to your stock of office supplies.