These disposable dust masks by wu-minglu are so convenient. You can use them to clean your house so dust particles dont make your allergies go off to using them in a wood working shop to keep from breathing in the saw dust. They are made of high quality material and are very soft compared to others I have used. The masks are so breathable and dont make your face as hot yet they stay in place to know that you are safe from breathing in toxins or dust. Overall great buy and I highly recommend.