Cool flow exhalation valve for easy breathing and cool, dry comfort. Adjustable M-noseclip. Lightweight for greater comfort and longer wear time. All filter design has no spare parts to clean and maintain. Promotes easier communication. Suggested for grinding, sanding, sweeping, bagging, fiberglass insulation, and other dusty/hot operations. NIOSH 42 CFR 84 N95 approved. TC-84A-1299.