-Choose from single layer or double layer based on the breathability of your current mask
-Can be inserted into cotton face masts with a pocket
-Available in adult and child sizes
-Made from non-woven polypropylene material.
** I am not a scientist or medical professional and cannot advise on effectiveness of cloth face masks or face mask inserts, nor how to care for them or clean them. Purchase and use based on your own research, comfort level and needs. **