D Rings. One-Touch® Easy Open® Slant-D® rings open, close and lock with one simple motion — no tugging or pulling required. ClearVue™ covers let you customize on all 3 sides for a professional looking view binder from any angle. Made of PVC-free, non-stick material. Rings mounted to the back of the binder instead of the spine create a labeling space without metal rivets. Includes shelf-pull and 4 clear interior pockets. Cover board made from 100% recycled fiber with at least 98% post-consumer fiber. Black.