I am a petite woman with thin face. I measured according to this video YouTube video from GetWetStore, and this Junior mask does fit me well.
https://youtu.be/eJ4_caV8_Ps?si=NE0JWG-tW6WWGkt1
I uploaded my prescription as directed during the purchase process, and the resulting mask I received is perfect fit and prescription is correct!
Some instructions come with the mask to remove a film using toothpaste on both inside and outside of the mask. Must do that!! I did.
Can’t wait to go diving!