Comfor-Tech Children's Reusable Copper Mask Imported from South Korea, this mask incorporates Comfor-Tech, a proprietary technology that enables Durable Water Repellent (DWR) treatment with a micro thin film on the surface while maintaining breath-ability. Comfor-Tech is manufactured by ion bonding copper to the fibers. Ion copper technology destroys the cell structure of microorganisms, preventing bacterial multiplication and having 99.9% semi-permanent antibacterial function. It is further treated by micro-encapsulation with natural phytoncide to provide anti-bacterial function and deodorizing. Popular among South Korean school children because of the soft, light and easy to breathe in features. The CDC is recommending everyone wear non-medical protective face coverings to help flatten the curve. This is NOT a high filtration respirator for medical use. The use of this face covering is not a guarantee against the coronavirus. This mask is recommended to be used in addition to practicing CDC recommendations on handwashing and social distancing.