Filtration technology from Britain. Adjustable ear loops adjust toggles to correctly fit around the ears. Hand washable with warm water and soap/powder. Breathing life up to 90 hrs. Adjustable nose clip that fits the face and helps to prevent pollutants from leaking into the mask. Exhalation valve for easy breathing; Available in two color. Available in XS, S, M, L, XL sizes. Easy and convenient to use. Useful for schools, colleges, workplace, hospitals, sensitive groups.