In addition, there are XS XXS Xl XXL XXXl.
X stands for more meaning
XS adds trumpet, XXS adds trumpet, but XXS usually sells it every time, haha.
But XXXL is for sale. This is quack quack quack.
As for the number six you mentioned, it is generally less. I am a teacher studying fashion design, and I don't teach any of them.
It's just that the teacher said it on my behalf that day. I remember it was a medium size.