EXTRA SMALL
US SIZE 4 – 5
UK SIZE H – J
DIAMETER 15 – 16MM
CIRCUMFERENCE 47 – 49MM

SMALL
US SIZE 5.5 – 6.5
UK SIZE K – M
DIAMETER 16 – 17MM
CIRCUMFERENCE 50 – 53MM

MEDIUM
US SIZE 7 – 8
UK SIZE N – P
DIAMETER 17 – 18MM
CIRCUMFERENCE 53 – 57MM

LARGE
US SIZE 8.5 – 9.5
UK SIZE Q – R
DIAMETER 18 – 19MM
CIRCUMFERENCE 58 – 60MM

EXTRA LARGE
US SIZE 10 – 11
UK SIZE S – T
DIAMETER 19 – 20MM
CIRCUMFERENCE: 61 – 64MM

DOUBLE XL
US SIZE 11 – 13
UK SIZE U – Z
DIAMETER 20 – 22MM
CIRCUMFERENCE 65 – 69MM