MD, I have no idea. I do not have any tape measures at this time. A Voler women's club in medium fits me fairly snugly. The large is too big, yet the size chart for a L is 36-38.

The champ-sys website says their large is also 36-38 and it fits me perfectly.

I'd say the Champ Sys jersey just runs one size small.

And, yes, it is a women's. See the highlighting I have added to the original post.