I have made tons of them for me and my girls. I use a 15 inch piece of elastic most of the time. If for a child you need to go down to a 13 inch piece. Of course if for a man you may want to add a bit more. And if the person is someone you know and can measure, measure from eyelid around to the other eye lid and add 1/2 inch for seam allowance. Hope this helps. Hugs. Nan W
Toogie, I made one for my husband once. But, I just measured around the side of his head. Measure yours or your hubby's. Good luck!! Hugs!
Thanks Laura, I read some and with trial I figured it out. I can make them better on my sewing machine and made 4. Thanks