Head Vector Evo 120 Ski Boots - Men's: The Vector Evo 120 is engineered to deliver new levels in comfort, customization and skiability in a streamline clean design. Customizable Form Fit Shell, a Dynamic Frame, and Perfect Fit HP Liner offer endless options for adjustable fit and flex for a ride that is both comfortable and responsive in equal measures. In addition our exclusive Double Power buckles offer unique easy closure of cuff buckles SPEED: fast TERRAIN: versatile, piste and off-piste SKILL: Top skiers STYLE: excellent skiing technique SIZES: 250-255-...-305 COLORS: black/anthracite/green Last: S 1850cc Shell: PU Liner: EVO Perfect Fit liner, HP frame footbed, 40 mm Power Booster velcro strap Buckles: 4 micro-adjustable Spine-Tech alloy buckles, 2 Double Power levers, 1 supermacro ratchet, Low profile buckles Features: Triple-Inj. dynamic frame, Easy Entry shell design, Racing flex tuning, Single canting, Rear support tuning, Form Fit, Evo Balance " Modern skiing requires comfort, efficiency, and control. HEAD's new EVO Frame is built around the legendary Vector last, but features a new highly efficient Dynamic frame which directs 80% of the energy directed from the body toward the rear of the shell. This stiff area cradles the skiers heel with comfort and power. However, the forefoot is able to articulate for better balance. Forefoot area is less subjected to mechanical stresses but needs to provide the feeling on the snow. The Dynamic Frame has been designed to obtain the best sensitivity and the dynamic response of the boot sole when the ski is flexing.