This is the Campus Binder Smart Ring Biz Ru-SP131D. The color is black, and it's B5 size. ● Wide cover that prevents indexes and sticky notes from sticking out ● Comes with a pocket for temporary storage of documents and business cards ● Opaque cover that hides the contents ● Slim and easy to carry ● Smart ring design allows the cover to fold back ● The binding opens wide and can be easily closed by pinching, making it easy to replace the paper.