3 Layers of Material - The mask is made of 3 layers of high-quality non-woven fabric; it has a stronger filtering effect and is more warm and breathableSkin-Friendly Materials: The disposable face masks are made of environmental friendly material which is non-irritating, soft and comfortableElastic earloop style : Elastic earloop means that our mask could fit any face shape, which also helps you take on or off it quickly and easily.Built-in adjustable nose-bridge strip: just press it gently to fit the nose bridge to better seal your face.All-season adoption: You can wear it when you need it no matter what the season is. It is very suitable for daily activities, such as daily outing, house cleaning, gardening.