The Rossignol ALLTRACK 110 men's downhill ski sports boots with the Dual Core shell are lightweight yet they provide full performance on and off-piste. The upper part of the shell loosens up to provide natural movement while walking within a range of 50°. The fully heat-adjustable inner liner with Thinsulate insulation provides maximum thermal comfort. Thanks to the inner material, the liner is thermoformable so that it fits your foot as best as possible.