Sizing: RB3

Size	Fighter's Weight	Hand Circumference
S	Up to 135 lb (60 kg)	max 6.75" (17 cm)
M	135-154 lb (60-71 kg)	max 7.5" (19 cm)
L	160-190 lb (75-85 kg)	max 8.5" (21.6 cm)
XL	Over 200 lb (91 kg)	max 9.25" (23.5 cm)