Proprietary 3M™ Cool Flow™ Valve helps keeps wearer cool Cushioning nose foam Adjustable noseclip helps provide a custom and secure seal Advanced electrostatic media is designed for ease of breathing This disposable N95 particulate respirator featuring 3M™ Cool Flow™ Valve helps provide comfortable, reliable worker respiratory protection against certain non oil based particles. Ideally suited for hot/dusty work settings or long periods of wear.