put your heel back to a wall and measure the distance between the wall to the tip of your big toe. This distance will be your foot length. You should refer to the table above and choose the size that is closer to your foot length.
with a measuring tape, wrap it around the widest part of your foot at your bunion joint. Ensure you have your full weight on your foot for accurate measurements. Refers to the table and pick the size that is closest to the width you have measured.