Designed for protection against oil based aerosol sprays, the 3M 8271 P95 Particulate Respirator Mask is ideal for grinding, sanding, sweeping, and other dusty / oily applications. Patented one-way cool flow exhalation valve prevents heat and moisture build up, making breathing easier. M-noseclip adjusts for a secure fit with fewer pressure points and reduced eyewear fogging. Light-weight construction for greater comfort and increased wear time. NIOS approved P95 particulate respirator mask. 10 masks per box.