4" x 6" Black with White Sublimation Panel Pinchbook™ Album. Reusable, expandable, and use no harmful and messy glues. Pull back the cover and the spring-clamp opens up, insert the pages, and it snaps back together. The unique spine creates a secure binder, however the cover can be easily re-opened and pages swapped. Use for photo albums, baby books, school year books; professional hard cover books, such as real estate books, restaurant cocktail menus and more. Holds up to 15 sheets of standard copy paper, or about 10 sheets of photo paper.How to Use Pinchbooks:① Open the covers all the way so they touch② Insert your sheets or photos into the spine③ Close the covers and admire the new album