The Alias Sensor 80 has a wide 104mm fit with a moderate 80 flex index which is ideal for advanced resort skiers with large wide feet. The Sensor Fit liner is a true lasted liner to address the common problem fit areas. The seamless one piece tongue and cushy cutout instep pocket eliminate pressure points across the tops of the toes and that pesky instep bone. The grippy rubber heel gives extra traction for walking around the resort. Ambitious all mountain skiers will find the performance they seek in the Alias Sensor 80 to enjoy the mountain all day in comfort.