Robby's Revs II Right Hand Sizing: To determine your correct Robby's Rev I, II or III size, measure (in inches) from the base of your palm to the tip of your middle or longest finger. You should use your dominant hand, the righ Small: 6.75-7" Medium: 7-7.25" Large: 7.25-7.75" XLarge: 7.75-8"