100% Cotton. Do not bleach. Do not use iron. Do not dry clean. Tumble dry low. Made In Mexico.
Reusable masks should be washed at a temperature of at least 167 degrees. That is the minimum temperature proven to kill the flu virus.
Chlorine, hydrogen peroxide, alcohol, and detergent are all effective cleaning products (Please be careful not to mix cleaning products as this can be dangerous).https://www.nytimes.com/2020/04/02/smarter-living/coronavirus-clean-home-house-disinfect.html