The AllSpeed Pro 110 from Rossignol is an excellent ski boot for the strong intermediate to expert skier that has a medium to narrow forefoot, and medium to narrow shaft of the leg. Strong skiers love the responsiveness and control of the AllSpeed 110. That responsiveness is due to the Sensor Blade Technology that lowers the weight of the shell, increases rearward support, and has a high torsional strength for cranking tight turns at high speeds. Rossignol's Optisensor Liner uses customizable dual density 3D molded padding that will improve your comfort and support, with the ability of being heat molded to accelerate the breaking in process. Thinsulate Insulation will only add to the warm and comfort of the AllSpeed 110.