SAFT MATERIAL: High quality non-woven fabric (polypropylene) 4 SIZE FOR YOU: MLXXLXXXL. Choose the size that suits you. FUNCTION: Effectively isolate dust and other harmful substances. WIDE APPLICATION: It is widely used in hospitals, factories, beauty salons, farms, laboratories and other public places. KEEP AWAY FROM VIRUS&DUST: They cover your body and clothing and create a physical barrier to the transmission of microorganisms and other substances.