The Five Star 2" Zipper Binder + Expansion Panel is durable enough to stand up to your busy schedule. Zipper binder has exterior expansion panel to store textbooks and notebooks without needing to unzip to access. Three binder rings hold 380 sheets and 5-pocket expanding file holds 200 sheets for a total of 580. Three exterior pen loops and zipper pocket holds pens, pencils and small supplies. Interior guested Velcro® pocket and mesh zipper pocket. Binder features carrying handle, zipper closure and fits in a backpack. Dimensions (Overall): 12.75 Inches (L), 12 Inches (W)