Removable rings for easy recycling. Chipboard is made from 100% recycled material. Acid-free polypropylene. Rings are mounted on back lid to reduce wear on paper. Clear overlay on front, back and spine for easy customization. A portion of the proceeds from each binder purchased is donated to American Forests to help plant a minimum of 7,500 trees annually. Capacity Range [Max]: 5; Sheet Capacity: 1050; Color(s): White.