90 Flex rating: This boot has a flex rating in the intermediate to advanced range and is generally too stiff for beginners to lean on properly and too soft for experts to ski at top speeds.
AT/Alpine Compatible: AT-Alpine Compatible: This ski boot will fit into Alpine bindings, as well as most AT bindings, meaning this is a great boot for resorts, sidecountry as well as backcountry.
Ski-Walk Flip Lever: The back of the boot sports a lever to be pushed up or down to transfer from walk and ski modes, respectively. The walk mode allows the cuff to slide forward and back, where the ski mode locks the boot in a forward, skiing stance.
Flex Walking Sole: The forefoot of this boot can flex, right under the ball of the foot, to give greater comfort when walking in the boots. When the boot is stepped into a binding, the flex in the toe is eliminated.
EC106 last: EC106 last: The forefoot width of this shell is 106mm, but the EC last is a more advanced high volume boot than Head's other wide boots.
Vibram Pads: This boot features Vibram rubber soles or grip pads in the heel and toe for added security while traversing the formidable parking lot.
HeatFit/High Performance HeatFit Liner: Self molding inserts in the liner and tongue quickly adapt to the shape of your feet, just by wearing and skiing them.
35mm strap: Wider than average strap at the top of the boot to help keep the boot together and to give good performance while skiing.
Micro-adjustable alloy buckles: These alloy buckles can be twisted to adjust for size, so if the default position of the buckle and the teeth is too wide or too narrow, you can twist the buckle like a screw until it fits just right.
Adjustable rear spoiler: With a quick adjustment, the height at the top rear of the boot can be raised or lowered. If you are taller than average for your boot size, or if you just want the extra support at the back of the leg, you can adjust the spoiler up about 1cm from standard. This will also pitch you forward slightly into a more aggressive stance.
Double Velcro Powerstrap: This a powerstrap on steroids. Using a simple pulley, the double power strap can tightened significantly more than a regular shin strap, which effectively acts as an extra buckle, keeping your upper shin and calf locked right where they're supposed to be.
Lace-up Liner: This boot has a liner with laces that enhance the fit of the boot, and helps the liner hug the foot more like a sock than a traditional ski boot liner. The laces can be removed to give a more traditional fit.