When you get the same thrill from the uphill as you do from the down, when being in the mountains to you is about more than counting your vertical feet or logging record times, you need a boot like the Dynafit Men's Radical CR Ski Boot. The Radical doesn't sacrifice performance for anything, and that speaks for both uphill and down. Engineered for outstanding ease of use, the Radical provides incredible ascents thanks to cuff rotation comparable to the best super low profile ski running boots. Polyurethane construction and a four buckle closure system give you the precise control and power transfer for bomber descents that those ski running boots could never even dream of. Dynafit's Custom Ready liner provides superior comfort and thermal insulation while still providing rugged durability season after season. The Motion Lock System makes the transition from ski mode to walk mode supremely easy and fast. Dynafit's Ultra Lock Strap guarantees maximum performance and ultra precise ski control. It also improves comfort by eliminating extra space between the tongue and your shin bone, reducing the painful shin bashing that often happens when pushing your limits.