3M Particulate Respirator 8271, P95 (Pack of 10) NIOSH approved for at least 95 percent filtration efficiency against certain oil and non-oil based particles Braided headbands help provide a comfortable and secure seal Adjustable M-noseclip adjusts easily for fewer pressure points and greater comfort 3M Cool Flow Exhalation Valve helps reduce heat build-up inside the respirator Advanced Electrostatic Media is designed for ease of breathing