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 Designed to increase comfort and wearability Advanced Electret Media is designed for ease of breathing Specifications Assigned Protection Factor - (APF) 10 Cartridge or Filter Included - Yes Class Comfort Plus - Specialty Color White - White Exhalation Valve - Yes FDA Cleared - No Aerosol Type - Non-Oil Braided Comfort Str - Yes