These three-layer face masks feature a 100% polyester outer shell and a cotton inner layer that follows CDC recommendations for cloth facial coverings.  The adjustable ear pieces are made with elastic material. 

Large size is recommended for men or larger adults. 
Small size is recommended for women or children. 
 
Also available in a 2 layer design that includes a slit for inserting a standard PM2.5 carbon pouch for added protection.  Two filters included. 
NOTE: Face masks are non-medical grade and non-returnable