Bought it for a mountaineering object at Siguniang Mountain in China, this coming March 18, according to a local guide, temperature at that time will be like -15℃ at summit ( 5276 m altitude).
Got a chance to try it out at -14 ℃ last week, a short hike to Dog Mountain and Pump Peak.
This boot really did a great job on keeping my feet ( most importantly, my toes) warm.
A little bit cold while resting about 30 minutes at the summit, but definitely warmer than wearing my regular snowboot o...