Cool Flow exhalation valve for easy breathing and cool, dry comfort;Stretchable, braided headbands for comfort;Lightweight design for comfort;Includes an 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