Mead PRO Platinum Heavy-Duty 3-Ring Zipper Binder, 1.5 Inch Capacity, 11.12 x 13.75 x 2.5 Inches, Purple (72870) Three-ring binder has pockets galore including an interior expanding file, calculator, pen, pencil and ID pockets, and a full zipper closure to keep everything contained Removable D-ring fixture allow you to take part of the binder with you for studying on the go, or carry a book or two rather than paper 8.5 x 11 inch sheet size; 11.12 x 13.75 x 2.5 inches overall; holds paper up to 1.5 inches thick Durable fabric material holds up to repeated use Carry all of your class notes with you in one binder