This face mask is made from 100% polyester and includes two woven, elastic loops for a comfortable, one-size-fits-all fit. This is NOT a surgical grade mask. It is not intended for any medical or commercial uses, whatsoever. It is a simple, cloth mask designed for everyday use to cover your mouth when out in public. The mask should not be used in any medical or surgical setting. We make no warranties that the mask prevents infections or the transmission of viruses or diseases.