XS 7.0" - 7.5" inches/ 17.8 - 19.0cm (Approx)
S 7.5" - 8.0" inches/ 19.0 - 20.3cm (Approx)
M 8.0" - 8.5" inches/ 20.3 - 21.6cm (Approx)
L 8.5" - 9.0" inches/ 21.6 - 22.8cm (Approx)
XL 9.0" - 9.5" inches/ 22.8 - 24.2cm (Approx)
XXL 9.5" - 10.0" inches/ 24.2 - 25.4cm (Approx)
3XL 10.0" - 10.5" inches/ 25.4 - 26.6cm (Approx)