The EzeBreathe KN95 - 7 layer Protective Face Mask "with Respirator Valve", Grey in colour, offers specialized protective capabilities over an above that of the 4 layer mask which is considered adequate. This mask effectively filters out dust, chemicals, particles, pollen, and smoke. Crafted from robust yet lightweight and breathable materials, this mask can be tailored to the contours of your face for optimal protection and comfort.