Our fabric is sourced from South Korea, it is a mixture of polyester and vegetable oil from plants that have antibacterial properties. This provides a semi-permanent antibacterial effect which is longer lasting than copper or silver infused fabrics that oxidize and lose their antibacterial properties. This mask will not kill covid-19, but it will protect you from other bacteria that would otherwise be accumulating in a regular cotton material mask. Masks get very dirty after long-wearing use. Wearing a mask will become an everyday reality when social distancing measures are reduced. Our mask will provide a comfortable fit with reduced moisture and decreased bacterial activity.