50 PACK - Yjiaka black disposable face mask protect daily health. The masks are disposable and cannot be reused | 4-LAYERS - Masks are made of 4 layers of high-quality with non-woven fabric; it has a stronger filtering effect and is more warm and breathable | DESIGNS - Adjustable nose wire and comfortable elastic earloop, extra-soft ear loops eliminate pressure to the ears.Hard to break, easy to carry | SUITABLE - Face masks bulk which is for adult, boys, girls, men, women. Can be used for outdoor public areas, schools, offices, and home usage | FEATURE - Disposable black mask is designed to prevent the spread of various air particles and droplets. It can protect and completely block out the nose and mouth from liquid splashes