I wear an Acerbis women's chest protector, and it works great. I bought mine a couple of years ago, and Acerbis was the only brand I could find that made a "female" version. For the rest of my gear (jersey, pants, boots, gloves, etc.), I wear men's items in the smaller sizes. You should probably have your wife try on her gear before you buy it, if possible, to ensure a good fit (for both comfort and safety). Good luck!