4-layers of Protection: These disposable face masks are made of 3 layers of non-woven fabric and 1 layer of meltblown fabric, which are soft, skin-friendly, breathable and comfortable. | There are two sizes of disposable masks, L (17.5cm × 9.5cm / 6.88 inch × 3.74 inch) is suitable for adults , S (14.5cm × 9cm / 5.7inch × 3.54inch) is suitable for children. | Wide range of uses: 50 pcs / box, completely meet your family / staff / friends' demands, can be used in schools, supermarkets, companies and other life situations. | Wrap-around design: The built-in nose bridge and ear loops can be adjusted according to the face to fit everyone's facial shape. | If you have any questions when buying adult / child masks, please feel free to contact us, we will give you a satisfactory answer.