Office and school supplies binders in fun and stylish bright purple;All natural silver-based antimicrobial additive by Agion prevents the growth of bacteria, mold, mildew, and fungus on the binder surface;Promotes cleaner schools, homes, offices, and hospitals with built-in ring binder protection;Agion's all-natural additive is based on silver (not nanosilver);Agion has global registrations including EPA and FDA;Perfect combination of fashion and antimicrobial binder protection that make the best binders for school or office;PVC Free - Non-stick, acid free and archival safe;Three ring binders include clear overlay on front, back and spine for easy customization and pocket on inside front and back for extra storage of loose papers