Held Hand Measurement
We suggest you use a cloth tape measure. You can get a range of measurements depending upon how much you try to make your hand wide and flat. We get the best fit by using the largest measurement you can get (by making your palm as wide and flat as possible with the thumb sticking straight out). We used a  Held measuring device in this picture to illustrate where to measure, but any cloth tape measure will do:

HELD SIZE CHART