Thank you for viewing! Inner lining: The front side is fabric, The back side is made of bleached cotton. 3 pieces. Mask elastic included; I will thread the elastic and tie it before shipping. Please refer to the photos for the size. For washing at home, please hand wash or use a laundry net. Please do not use a dryer, as it will damage the fabric! Shipping will be via Yu-Packet Post Mini in an envelope. The price includes shipping. This is a handmade item made by an amateur, so there may be uneven stitching or slight imperfections. If you are concerned about this, please refrain from purchasing. If you don't mind, thank you for your consideration.