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 3M Cool Flow Exhalation Valve reduces heat build-up inside the respirator Spacious and durable and Designed to increase comfort and wearability Recommended Industry: Commercial buildings, Construction, Design & Construction, Food Processing, Food Safety, General Manufacturing, Heavy Infrastructure, Industrial Maintenance, Mining, Oil & Gas, Transportation