The 2 1/2" Signature Round Ring Binder is made of our executive vinyl material giving the binder a high-quality look. Standard with black front and back horizontal pockets for additional storage and black liner. Designed for continual use - great for Safety Data Sheets, safety or training programs, membership directories, owner manuals, sales guides and more. The ring binder utilizes 2 1/2" Round rings which can hold 500 loose leaf sheets of 11"H x 8.5"W paper.