The flex of this ski boot is 125, which is quite high, and will allow for high-performance manoeuvres. The 43mm wedge of the HR Pro 125 is FIS (International Ski Federation) approved, and is equipped with FSE (Full Shock Eraser) technology, which means that it will absorb the impact of landings. The liner and rear spoiler of this boot are also FSE equipped, for added reinforcement. The Performance Fit Pro footbed of this boot position the feet to provide comfort during intense runs. There are size options available for the Nordica HR Pro 125 ski boot.