Size is women's S. I purchased this used, in good condition, for my partner to use for jet skiing in early summer or on cool, cloudy days. We used it only once and then stored it in the closet. We are selling it because we don't use it. There was a white stain from the time of purchase, and the cause is unknown. Other than the white stain, it is very clean. #JetSki #Women's #ColdProtection