What is my size? Men's sizing, short sleeve t-shirt

Look in your closet for the shirt you wear the most, the one that fits you best. Lay it out on the bed with the front facing the ceiling, take a meter and make two measurements. The first (A) is the distance in centimeters from armpit to armpit and you write it down, I know you; by the time you do the second measure you no longer remember the first!! ha ha ha. The second measurement (B) is the distance in centimeters from the highest part of the neck to the waist. Now compare with the following table.

Sizes W (cm) B(cm)
S fifty 70
m 53 72
L 56 74
XL 59 76
2XL 62 78
3XL 65 80
4XL 70 82
5XL 75 84

Measurements may vary +/- 1cm