Match that measurement (in inches or cm) into the brand's size chart. A fresh helmet should be limited more than enough that the "cheek pads" make you appear like a chipmunk. They are going to break in! Most with the time, a crash is just not even the rider's fault. https://rafaelnmjhe.digitollblog.com/39690958/women-s-full-face-motorcycle-helmets-options