The ALIAS SENSOR 100 delivers a comfortable, generous fit without sacrificing powerful, all-mountain performance. Sensor shells feature a 104mm "wide" fit while retaining the contoured forefoot, strong heel cup and asymmetrical toe box. Sensor Fit technology addresses all of he common problem fit areas, providing an accommodating instep and more articulate ankle area for increased comfort, circulation and warmth. The Alias Sensor 100 is a versatile all-mountain boot with a generous fit for advanced to intermediate skiers.