Much like wearing a glove or a shoe, the right grip size is important. The right grip side determines your overall grip on the club and how comfortable you are handling the club while swinging it at full speed. Grip size measurements come from the end of your middle finger to your wrist when your handle is fully extended. Incorrectly sized grips can result in erratic shots, as your hands will adjust to the incorrect size and cause movement as you swing. Excessive movement is not a good thing for a long, accurate shot. Don't assume your height and grip size are related either. Actually, measure it!