The Tecnica Mach 1 120 MV is a great boot for the advanced to expert skier who has a medium width forefoot and medium shaft of the leg. The Mach 1 120 has Tecnica's CAS (Custom Adaptive Shape) Liner that can easily be customized for your foot by heating. This liner also utilizes Celliant, which is a reflective material designed to bounce heat back towards its source to help keep your feet warm and comfortable on the mountain. The CAS Shell is always a favorite for a bootfitter to customize. Strategically placed dimples in key fit areas hold a punch with less pressure or force and they provide an accurate road map for bootfitters to work with. LiftLock Buckles stay open when you want them to, so this boot can slip on and off your foot with ease. Tecnica has developed T-Drive Construction that has a carbon ride that connects the upper cuff to the lower shell that drives lateral power transmission and edge to edge responsiveness. If you want power and precision out of your skiing, the Tecnica Mach 1 120 MV is a great choice.