SIZE CIRCUMFERENCES
XS < 7.5"
S 7.5" - 7.9"
M
8.2" - 8.7"
L 9" - 9.5"
XL 9.9" - 10.2"
XXL
10.2"
SIZE CIRCUMFERENCES
XS < 19 cm
S 19-20 cm
M 21-22 cm
L 23-24 cm
XL 25-26 cm
XXL > 26 cm