Sizing: RB1

Size Fighter's Weight Hand Circumference
S Up to 135 lb (60 kg) max 7.5" (19 cm)
M 135-154 lb (60-71 kg) max 8.25" (21 cm)
L 160-190 lb (75-85 kg) max 9.5" (24 cm)
XL Over 200 lb (91 kg) max 10.25" (26 cm)