X Small - Toddler (2-3 years)
4.25" middle seam length (chin to nose)
3.5" middle seam to ear loop
Small - Child (4-7 years)
4.75" middle seam length (chin to nose)
4" middle seam to ear loop
Youth - 8-12 years
5" middle seam length (chin to nose)
4" middle seam to ear loop
Medium Adult (I wear this size, 33 year old female)
6" middle seam length (chin to nose)
5" middle seam to ear loop
Large Adult (my partner + father wear this size)
6.5" middle seam length (chin to nose)
5.5" middle seam to ear loop