The best boots in the Medium Fit class should have most of the edge power and quickness of Narrow Fit boots together with the fit and creature comforts demanded by everyday skiers who just want to have fun (and warm toes). The Dalbello delivers. Its 95 flex rating is understatedï¿½it packs plenty of power to maintain a stable stance through difficult patches and at high speeds. "Not afraid to drop the hammer. Strong, stable, grinds through anything." Notes: The polyurethane cuff combines with tri-injection polyether construction in the lower (3D Power Frame Architecture) to enable easy entry and exit, Contour4 fit shape wrapping and solid edge power. All Viper and Mantis boots share the same all-mountain stance geometry (Center-Balance Stance). 45 mm power straps, cuff adjustment, and Low Contour Profile Cuff Geometry (girl-cuff) on all Mantis models.