Sizing is FAR, FAR off...
I normally (90%) of the time wear a large in ladies cycle jerseys. I am thin and small framed, but busty on top so larges usually work. My bust is 35 1/2" around the fullest part. That would put me in a large Gore vest. I ordered the large as well as the medium just in case. I unpacked them and thought I had been sent the men's version by mistake because of the massive size. Double checked the tag and it was definitely the ladies one. I tried on the medium just for laughs since according to the size chart, I needed a large... it was so ridiculously huge, it looked like a square shapeless tent on me. I know it's a vest and not a racing jersey but it truly looked like I was wearing a men's vest and an ENORMOUS men's vest at that. So now I have ordered the XS to see how that one fits. I would give this zero stars on the fit/sizing as it is off by about 10 inches on the size chart...however, I liked the look/feel of it enough to try an XS. It is very, very frustrating though because now I have to pay $6.99 to send these grossly misrepresented vests back.