Cardinal ExpressLoad ClearVue Locking D-Ring Binder, 4-Inch, Black (49141) Ring design removes the hassle of maneuvering sheets over the curve, while protecting them from damage during loading/unloading Locking rings hold contents securely PVC-free cover material will not stick to cover inserts or materials stored inside, is safe for all documents, including photographs Clear, non-glare overlay for customization on all three sides Horizontal interior pockets for quick and convenient storage