This product is a disposable protective mask with ear loops. It's made of breathable, skin-friendly non-woven fabric for the inner & outer layers. The filter layer is made of melt-blown filter fabric to keep out dust particles, smoke, pollen, etc. They are specified at 175*95mm, rated at >95% filtrate power, and come with 20 per pack.
The Disposable Protective Masks can be used whenever a facemask is required. Make sure to use it properly for maximum protection, covering your nose and mouth. This product is not a medical device.