Height measurement is strongly correlated to length and size of the face, making it a great measurement for mask sizing. If your size is on the borderline, pick the bigger size to ensure better fit.


X-SMALL: fits children under 10 years

SMALL: fits children 10+ and petite adults, 5'2" (1.6M) and under

MEDIUM: fits smaller and shorter adults, 5'3" - 5'5" (1.62M to 1.65M)

LARGE: fits most adults, 5'6" - 6'2"  (1.66M to 1.9M)

X-LARGE: fits very tall or large adults, 6'2" (1.9M) and up