You start by cutting and sewing your rectangle and then make the pleats, that require no measuring.

Then, just secure the pleats and sew them down.

It is really that easy!

How To Make An Elastic Face Mask

Image By: Melanie Ham Via YouTube

This face mask is super comfortable, I really like it!

Make Pleats In An Elastic Face Mask

How To Secure And Sew Pleats For Contour In An Elastic Face Mask