If you are unsure which shoe size to purchase, please follow the
following steps:

• Draw a straight line, longer than your foot, on a piece of paper.
• Place the paper on a flat surface. Stand on the line with your
  heel and longest toe centered on the line. If measuring a child's
  foot, it may be easier to hold the paper up to their foot.
• Place a mark on the line at the tip of the longest toe and at the back
  of the heel.
• Repeat steps 1-3 for the other foot.
• Measure the distance between the marks. Taking the larger of the two
  measurements, use the conversion chart to find your correct shoe size.