*Important Note: If your feet fit a range of shoe sizes (for example,  you can wear either a 7.5 or 8 depending on the style of shoe), pick your smallest shoe size and then use the Sizing Chart above to determine which Mynxx size is right for you (S, M, or L).  Never size upwards, only downwards.  Mynxx works by tension, and must be stretched tightly over the shoe for optimal use.