Designed for the CDC’s recently modified its stance on wearing a fabric face covering where other social distancing measures are difficult to maintain. This fabric face mask cover is made out of 2 layers of 4.3oz 100% polyester knit jersey material. It features an internal pocket that can be accessed by both sides to accommodate a PM2.5 filter insert or surgical mask. This mask can be utilized by itself in casual environments such as retail settings to block large particulates such as a random cough or sneeze. Can be used multiple times, and should be sterilized (laundered) after each use to minimize risk. All our masks are made right here in Salt Lake City. Medium is designed to fits most average people, large for large heads and larger humans. Top ban loops overhead, bottom bands ties behind head. Designed for snug fit, face covering are not returnable.