Size Chart Important! Please measure the thickest part of your calf (circumference) to determine the proper size compression sleeve for you. Calf Size Measurements Small: 10-13 Medium: 12 - 15 Large: 14-17 XL: 16 - 19 ANOTHER RUN, AND YET AGAIN, ANOTHER CHARLIE HORSE It seems that no matter what you do, or how many bananas you eat, leg cramps are..