I found some womens doufold shirts on ebay. I do not own any duofold unless my ll bean river driver shirt counts. All the wool shirts I own are... one I got in Australia. It is great as a base layer. A little rough though effective. And then I own a cuddle duds shirt. And that is it besides couple wool sweaters. I want to get a good wool base layer but not ibex or anything like that to much $$$$. Oh I almost forgot about my wonderful ibex cycling sweater my dh gave me for christmas last year. That is a sweet sweater. So anyway I wear a small to med and was not familar with number sizing on shirts. Seems strange I wouldn't? I don't kow I just go for s ,m or L depending on the fit.