How to measure
Measure around the fullest part of the chest, ensure the tape is under the arms & arms are straight at side of body.
Measure your waist at your narrowest part (natural waistline).
Measure around the fullest part of your hips - standing with feet together.
With elbow bent slightly, measure from center of spine at base of neck, across the shoulder & down arm to elbow, finishing at wrist.
Measured from crutch to ground (shoes off).