The mask should not be used in any surgical setting or where significant exposure to liquid, bodily or other hazardous fluids, may be expected; in a clinical setting where the infection risk level through inhalation exposure is high; or in the presence of a high-intensity heat source or flammable gas. We make no warranties, either express or implied, that the mask prevents infection or the transmission of viruses or diseases. Washing instructions: Hand washing in cold water is recommended. If machine washed, use gentle cycle and cold water. For best results, hang dry. Made in the USA. Two Layer Construction. Soft and Breathable Fabric. Material: 2 Ply 95% Polyester 5% Cotton. Washable and Reusable. One Size Fits Most Adults. All Sales Final - No Returns.