Cut out a piece of fabric (you can use an old t-shirt, scarf, etc.) that is at least 20″ by 20″.
Fold both sides of the fabric to meet in the middle.
Fold fabric again in half lengthwise.
Grab two rubber bands (or any elastic band) and pull one around each end of the rectangle.
Pull the each outside side of the fabric to the middle.
Put the mask on by pulling the elastic bands behind your ears making sure the fabric is against your face.