The KN95 mask is suitable for respiratory protection, filtering dust, haze, bacteria, droplets and other harmful particles in the air. It is made of a non-woven, melt-blown, multi-layer filtration system to provide a higher level of protection than a typical 3-ply surgical mask. They are comfortable with elastic ear loops and an adjustable metal nose piece for a snugger fit. Manufactured with activated carbon and cotton to help your skin stay fresh. These masks are disposable and designed for one-time use.