Our masks are one size fits most. Keep in mind that the nature of silicone is that it is very flexible so the masks will fit a wide range of the population, but they will fit differently on each individual. We offer masks in female fit or male fit which is denoted in the listing. We cannot; however, take a mask style and change the fit due to the nature of the build process. Any foam, burlap or mummy masks will also have the female or male fit inner dimensions just without the flexibility of the silicone.
The Male Head Masks measures internally 18" H x 13" W x 11" D with a circumference at the brow of 23" approximately.
The Female Head measures internally 17” H x 12” W x 9.5” D with a circumference at the brow of 22” approximately.