Brian's utilizes an "Ankle to Knee" fit guide to determine the proper leg pad size to meet your needs.  To determine your "Ankle to Knee" measurement, first measure the distance from either ankle bone to the middle of the knee cap, straight up, knees slightly bent.  Next, determine the desired height of your pad on your thigh, then measure from the center of your knee cap to this point.  Finally, determine your skate size.  Find these measurement in the chart below, then look at the pad size on the left hand size of the chart to find your pad size.

If fitted properly, the goalie's knee should rest in the center of the knee cradle with the pad securely attached to the goal skate and properly strapped on the goaltender's leg. Generally, this will ensure that the pad breaks (bends) at the knee/shin and ankle as designed for optimal performance.