A boot with the perfect amount of flex is crucial for any outing. Finding that boot can be a challenge because of all the components that make up the stiffness of a boot, like the sole, midsole, board last, and the upper materials.

In this video Kendall breaks down the Crispi stiffness scale, and adds some insight on all the components of boot stiffness and flex rating.

https://www.crispius.com/