DescriptionAdding one of our face mask filters in your face mask, the double protection will make you feel more secure when in outdoor or in other dusty or dirty positions, as our mask filter can reduce the risk of taking in gases, harmful smells, pollen, smoke, dust and other particles effectively. This product can be given as a great gift for your friends and families. They will be very happy.Features- Color: Grey, White. - Material: Gauze. - Size: 14x10x0.8cm/5.5x3.93x0.3 inch. - This product can be given as a great gift for your friends and families. They will be very happy. - Made of gauze material, it is durable and long lasting use. You can safe to use it. - This product is small, light, and easy to carry, so you can take it with you wherever you go. - Powerful filter system consists of 5 layer filter material, effectively prevent pollutant like dust, small particle, PM2.5, fog from entering respiratory tract. - Inner skin friendly fabric, no sensitivity, moisture absorption and sweat. Can be easily inserted into mouth mask.