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
WAIST: Measure around natural waistline
INSIDE LEG: Measure from top of inside leg at crotch to ankle bone
NUMERIC SIZES: These are the same as your measurement in centimetres/inches. Round up or down to the nearest size.