Item is non-returnable. Designed to help provided reliable respiratory protection of at least 95 percent filtration efficiency against certain non-oil based particles. Braided headbands and an adjustable M-noseclip aredesigned to help enhance user comfort and increase wearability. The respirator incorporates 3M's proprietary technology with advanced electrostatically charged microfiber filter media designed for ease of breathing. This respirator is compatible with a variety of protective eyewear and hearing protection. Fitted with a 3M Cool Flow™ Exhalation Valve, this respirator is designed to release hot, humid exhaled breath quickly, helping to prevent an unpleasant buildup of heat inside the facepiece - a significant cause of discomfort to respirator wearers. NIOSH approved.