XS S M L XL
Men 3"
(7.6 cm)		 3.25"
(8.25 cm)  		 3.75"
(9.51 cm)		 4.25"
(10.8 cm) 		 4.75"
(12.1 cm)
Women 2.25"
(5.7 cm) 		 2.5"
(6.35 cm)		 3"
(7.6 cm)		 3.5"
(8.9 cm)		 4"
(10.2 cm)

Measure your hand across the knuckles with a tape measure.