Are there size differences, or males and females?
There are no specific male or female masks. Some may feel that the eyelashes make a mask female, but I have sold them to macho male bikers and they look great. If it looks good – wear it. Size-wise, some are larger, some smaller – but 97.3% (Like I did a survey…) will comfortably fit all but the extremes. Let me know if there are any major face/head size factors or other considerations (such as spectacles) and I will make any necessary recommendations.