Size dates are from pants, not from your body
How to measure your waist?
tile measure waist from your usually pants.
very important: do not measure your body waist!
Before eating, after eating, when exhaling, when inhaling, above the navel, under the navel, and other factors are different measurement results, so measuring the body is wrong!
Size comparison reference
Comparison of Chinese size and size of European and American countries
airsoft tactical uniform