The tables refer to the morphological size and not the measurements of the products.
Since garments fit change from supplier to supplier, please follow these size charts as a general guide.
The measures are expressed in cm.
HOW TO MEASURE YOURSELF
CHEST: Place the tape measure under your navel and take the measurement. Measure around the fullest part of your chest.
WAIST: Measure around the narrowest part of your waist. Wrap the tape measure under your armpits at the widest point around your chest.
HIP: Measure the widest part of the hips, at the top of your legs.