Sizing: RB5

Size	Fighter's Weight	Hand Circumference
S	Up to 135 lb (60 kg)	max 8.75" (22 cm)
M	135-154 lb (60-71 kg)	max 9.75" (25 cm)
L	160-190 lb (75-85 kg)	max 10.25" (26 cm)
XL	Over 200 lb (91 kg)	max 11" (28 cm)