Palm Circumference (in)
Size	XXS	XS	S	M	L	XL
Women's	5 - 6	5.5 - 6.5	6 - 7	6.5 - 7.5	7 - 8
Men's		6.5 - 7.5	7.5 - 8.5	8.5 - 9.5	9.5 - 10.5	10.5 -11.5
Kid's			4.5 - 5.5	5 - 6	5.5 - 6.5

Use a tape running in a circle around palm.