These disposable, anti-dust masks help protect you from inhaling small particulates like saw dust, metal shavings, pollen, allergens, and more. Air filter is encased within 3 breathable outer layers to maintain hygiene and effectiveness. Made of 3 Layer with 25gsm to ensure the quality of the product. It is water and air permeable and thus, does not clog. It is light in weight and odourless.