NIOSH approved for at least 95 percent filtration efficiency against certain non-oil based particles.3M Cool Flow Exhalation Valve reduces heat build-up inside the respirator.Adjustable M-noseclip reduces potential for eyewear fogging.Braided headbands two-strap design with dual point attachment helps provide a secure seal.Spacious and durable.Designed to increase comfort and wearability.Advanced Electrostatic Media is designed for ease of breathing.