Round-ring binder features an all-natural, silver-based antimicrobial additive to prevent the growth of bacteria, mold and mildew on the binder's surface. Powerful antimicrobial formula does not wear off over time to promote cleaner offices, schools and hospitals. Clear overlays on the covers and spine allow you to conveniently customize the notebook for quick reference. Clear inside pockets provide extra storage for any loose documents. Binder holds letter-size paper and is designed with a nonstick material to prevent smudging. Design also includes spine-mounted rings and exposed rivets.