4-Ply Protective Design- Four layers of protective filtration which includes 2 non-woven outer Layers, 2 melt-blown inner filter, making these KF94 face mask with a light design and ensuring the safety of users. Protect you against Haze, Dust, Carbinol, Pollen, Exhaust and etc. 3D DESIGN-Face Mask for men, women has unique shaped forming technology, bigger cup design help against particles & breathe smoothly. Pleasant Wear- It is light-weight and breathable for comfortable wear. High quality elastic ear straps. Can withstand 5 times the usual wear test. Strong and durable.