It features high filter performance that blocks 99.9% of viruses, viral droplets, bacteria, and fine particles such as PM2.5.99.9% filtrationIts unique V-shape design fits snugly along the lines of the face without any gaps, preventing uncomfortable openings. The extremely soft texture ensures a comfortable fit, maximizing its excellent protective effectiveness. Additionally, the wide and soft ear straps are designed to prevent ear pain even during prolonged wear. The size is "Regular (M size)," which can be used by both men and women.