100% Filter Efficiency Against Solid And Liquid Particles That Do Not Contain OilUse For Mold Remediation In Accordance With Us-Epa Guidelines And Sanding Or Scraping Lead-Based Paint3M Cool Flow Valve Technology For Heat Reduction And Easier BreathingSoft Face Seal For Long Lasting ComfortDual Heavy Duty Adjustable Straps For Extended DurabilityNiosh Approved