Durable binder features an expandable pocket that adds even more space for extra storage. The gusseted pocket expands to hold up to 2-1/2 times more than standard pockets so it's deep enough to hold a small planner, composition book or wirebound notebook. Stair-step pocket design adds room for even more organization. Slant rings offer a higher page capacity than round rings & allow easy page turning. Pages lie flat with back-mounted rings with exposed rivets on back. Customizable clear view cover lets you design the perfect cover for your presentation. Binder holds letter-size documents in the 1" capacity.