NIOSH approved for at least 95 percent filtration efficiency against certain non-oil based particles 3M™ Cool Flow™ Exhalation Valve helps reduce heat build-up inside the respirator M-Noseclip adjusts easily for fewer pressure points and greater comfort. Braided headbands two-strap design with dual point attachment helps provide a secure seal Spacious and durable Designed to increase comfort and wearability Advanced Electret Media is designed for ease of breathing This disposable N95 particulate respirator features the proprietary 3M Cool Flow Valve and helps provide comfortable, reliable worker respiratory protection. It is ideally suited for hot/dusty work settings that require long periods of wear.