Washable,Reusable & Stretchable. Available in: YOUTH One size fits most (SMALL) ADULT One Size fits most (LARGE) **These polyester masks are not intended for use in the diagnosis of disease or other conditions or in the cure, mitigation, treatment, or prevention of disease. Avoid using these masks (1) in any surgical setting or where significant exposure to liquid, bodily, or other hazardous fluids may be expected; (2) in a clinical setting where the infection risk level through inhalation exposure is high; or (3) in the presence of a high intensity heat source or flammable gas.