These masks are made with 3 layers. The inner layer is 100% cotton for comfort and breathability and the middle & outer layers are 95% Polyester and 5% Spandex. his mask comes with a filter pocket that allows for the use of a 2.5 PM filter if desired. Hand wash and lay flat to dry is recommended. The masks are washable, reusable, and can be folded for easy carrying
Height is 5 to 5.75", Width folded is 5 to 5.25", Earloops peripheral length is 5 to 5.5"