PureMe Anti Pollution Anti PM2.5 mask is a 5-layer mask to filter out dangerous PM2.5, PM10 and dust present in air. The design and colour is attractive, ensuring you can wear it in public places without hesitation. The mask must be used in outdoor conditions only and should be avoided indoors. The life of each mask is upto 100 hours under normal conditions. The mask is non washable and should be disposed off after use