ADJUSTABLE EARLOOP -- Soft elastic earloop can reduce pressure to ears, not easy to drop, no need to adjust it when work. Adjustable metal nose clip can adjust to tightly fit your face, very lightweight and easy to carry. 3D DESIGN -- Advanced 3D design is designed according to the human face to fit the human face, which provide a large breath space to reduce stuffy and hot, which is perfect for daily protection and effectively protect you. BREATHABLE KF94 FACE MASKS -- The disposable face masks are made of high-quality melt-spray filter layer and non-woven fabric, comfortable, breathable and stronger filtering effect. Just hold the elastic band on your ears and press the metal strip on the nose bridge to create a light seal around your face. PACKAGE CONTENT -- 50 pieces per package, 5 colors are shown as picture, 10 pieces per color. Disposable using only, suitable for adult men, women and teens boys girls. 4 LAYERS OF PROTECTION -- High-quality breathable non-woven mouth nose cover, more comfortable to wear and effectively protect you, suitable for home, office, indoor or outdoor public places, such as school, supermarket, store, cinema, park, garden, sports yard, driving.