Women's shoe sizes 5-1/2 to 10
Men's shoe sizes 3-1/2 to 7
MEDIUM Fits
Women's shoe sizes 11 and up
Men's shoe sizes 7-1/2 to 14
99% of women wear size small,
and 99% of men wear medium. If you are a borderline size or have narrow
feet, then we recommend starting out with the Small size.