Ebay Mobile users: see FULL DESCRIPTION for complete details. This is a nylon coated 3″ 3 D-Ring binder from Microsoft. I used to own a computer company and I found this among some other treasures and thought someone would be able to use it. There are no pockets on the inside. It measures approximately 12.5″ wide x 11.5″ high with a depth of 4″. According to similar information on the internet, this 3″ binder can hold up to 670 normal sheets of paper. A physical description follows… .