When we're on a daylong backcountry mission where we need comfort to go with uphill prowess, we trust the Dynafit Radical Pro Alpine Touring Boot. This backcountry touring boot allows us to adjust the fit and feel with microregulating buckles, a wide 103. 5mm last that promotes blood flow, and HOJI Lock lever that opens up plenty of motion to help us stride confidently. When the end of the day comes, and we finally get some downhill action, the 110 flex allows us to drive our skis with confidence.