UniKeep 3 Ring Binder - Clear - Case View Binder - 1.5 Inch Spine - With Clear Outer Overlay - Box of 15 Binders PATENTED UNIKEEP RING DESIGN - rings snap securely through thousands of uses. Metal free design will never pinch, crimp, or rust. FULLY CUSTOMIZABLE - customize the entire binder with your graphic. You can use a single sheet to decorate the front, back, and spine. STACKABLE design allows you to stack neatly on a shelf. Binder features a snap locking latch to ensure the binder stays closed. ARCHIVAL SAFE - UniKeep passed the rigorous Photographic Activity Test (PAT). Safe for long term storage of photos and documents. MADE IN THE USA OF ENVIRONMENTALLY FRIENDLY MATERIALS - 100% polypropylene construction is curbside recyclable.