Samsill 18297 Clean Touch Locking Round Ring View Binder, Antimicrobial, 4" Cap, White Stay Clean with these presentation binders. Uniquely designed with the user in mind these binders are made with an antimicrobial additive by Agion that helps fight, for the life of the binder, the growth of bacteria, mold, and mildew that infiltrates everyday working environments. These presentation binders feature a clear overlay for simple customization to executive presentations, company manuals, or hobby projects.