I purchased these boots for a week long Winter Mountaineering School in the Adirondack State Park in New York, in the Lake Placid area. I am a novice at 'Winter Mountaineering' in hard sole boots. This was the first week of February, 2019 when a 'polar vortex' was forecast to move into the region with temperatures expected of -25 degrees. I had previously purchased (and returned) at least a half dozen brands and models of Winter mountaineering boots before settling on these North Face boots. These boots are made in Romania, not Italy, and I was not unhappy at all about that. Some of the points which caused me to keep these boots, and which I found beneficial on my trip, were firstly that based on my physical examination these boots would keep my feet warmer than the other boots I tried (almost all available models with a removable inner bootie). Specifically, the removable inner bootie is thick and heavily padded (and has a quick lace system), and the boots also have a non-removable, and thicker, insulating lining which is attached to the outer shell. So based on this I concluded these boots must, due to the total thickness of the insulation, be warmer than the other models I examined. I wore, in zero degree (F) temperatures, wading through deep snow, only a thin liner sock, a vapor barrier liner, and no outer sock. My feet were warm at all times, except perhaps when standing still in camp for several hours at that temperature. So from that standpoint I am very satisfied and would recommend these boots highly. For me that was and is the most important criteria in choosing a Winter mountaineering boot. Also, the boots were entirely comfortable to wear for ten hours and fit my standard width size 11 foot perfectly. After ten hours, yes I wanted to get out of the boots, but was never in discomfort. Some additional points are that the boots seem to be waterproof, but are marked as water resistant. Also, I was able to walk around camp and hike without snowshoes very comfortably. I was quite surprised on this point. When fully tied and zippered, the boot fits perfectly, with only the tiniest bit of toe pressure when going down steep (60 degree (+)) grades for several miles on snowshoes. However, and perhaps because the boots are still new, they were very difficult to get on. The soft removable bootie, with its rubber-like bottom, caught on the rear of the boot itself and would not easily slide into place. The video I have attached is not fair insofar as I'm holding my iPhone with one had and putting on the boot with the other, nevertheless I think you can see what I'm referring to. Also, the tab at the end of the velcro closure is too small and its very difficult to thread through the metal ring; impossible with gloved hands. And the metal ring itself, you can see in the video, is improperly attached to the boot so that the velcro closure does not nicely pull the boot closed. Note also the placement of the velcro strap interferes with the zipper; the velcro strap creates a bump which the zipper must be pulled over. In fact, and this is the reason I will return the boots as defective, is that the zippers used on these boots are not robust enough for their intended purpose. You can see here a photo of where the zipper actually separated. Fortunately when I pulled the zipper down to the bottom, and back up, the zipper re-seated itself and appears fine. However when that happened in the lodge, just before heading out to the mountain, I thought my trip was over before it began. And each time I put the boot on for the next five days, and had to pull on the zipper with extraordinary effort (to get past the bump at the velcro closure), I was fearful of the zipper pulling apart again, and this time not in the lodge, but in camp with temperatures just above zero degrees. I used some beeswax and the zipper is functioning much better now after its been worked a lot, however I am still very concerned it will fail at the worst possible time.