Size	Bicep (in)	Forearm (in)
XS	10 - 11.5	6 - 7.5
S	11.5 - 12.5	7.5 - 8.5
M	12.5 - 13.5	8.5 - 9.5
L	13.5 14.5	9.5 - 10.5
XL	14.5 - 16	10.5 - 12
Youth
S/M	8 - 9.5	5 - 6
L/XL	9.5 - 11	6 - 7