School Smart Blue 1-1/2 Inch Polypropylene Round Ring Binder features a heavy-gauge chipboard front, back and spine with a durable suede vinyl cover. Round ring mechanisms are easy to open and close with 1-1/2 inch diameters. Quality general purpose binder includes 2 deep inner pockets that holds loose sheets. Entire binder measures 10-1/2 W x 11-1/2 L inches.