Alighieri

UK J M P Q S T V
US 4.75 6.25 7.75 8.25 9.25 9.75 10.75
Women Small Medium Large Extra Large - - -
Men - - - Small Medium Large Extra Large
Inside Diameter (mm) 15.70 16.90 18.10 18.50 19.30 19.70 20.50
Inside Circumference (mm) 49.32 53.09 56.86 58.12 60.63 61.89 64.40