A three season mountaineer boot. Maybe the lightest in this class?
Mammut Taiss Light Mid GTX Red/MarineUpper: Schoeller, Ripstop, Microfiber
Lining: Goretex
Outsole: Vibram Ascension Litebase
Heel Drop: 11mm
Weight: 500g (1/2 pair 8.5UK)
Additional: B2, semi-automatic crampon compatible