When it comes to picking out the right ski boot, it's important to focus on the flex index. This is a scale used by manufacturers to determine how soft or stiff a boot will fit, generally ranging ...

Ski boot flex/stiffness is measured by increments of 5-10. A beginner skier should ski in a boot with a flex of 60-90, and a more expert skier should be in a boot with a flex from 90-130.