To choose the correct size for you, measure your body as follows:
Chest :
Measure around the fullest part, place the tape close under the arms and make sure the tape is flat across the back.
Chest:
Measure underneath your arms at the fullest part of your chest.
Waist:
Find the natural crease in your waist by bending to one side then measuring all the way around.
Hip :
Measure at the fullest part of your hip point.