About this item 99.99%Polyester Ear Loop closure ?We provide a pack of 4 face mask with 15 filters ,we provide several options of colors for each package. ?It is ice silk cotton, comfortable, soft. It is 3D draping and has an adjustable nose clip and elastic ear loop. ? You can wear it for a long time. It can be adjusted depends on your face to make it fit better. It is able to cover your face very well. ?Suitable for outdoor activities such as running, cycling, hiking, skiing, etc. ? We are always paying attention to our customer needs and suggestion,in case of any problem you are warmly welcome to contact us and we will respond as soon as we can.