Simonwrote a review of La Sportiva Spantik Mountaineering Boot on April 10, 2014
Familiarity: I've used it once or twice and have initial impressions
Fit: True to size
These boots look to be huge on the pictures, but when you put them on with your snow pants, they are not that big at all. They are very comfortable for my feet. I wear size 45 tennis shoes, and I got size 45 for these boots and they fit great. I have not had a chance to take them hiking yet, but I wore them the whole day ice fishing with some quite long walks on the lake in deep snow and they worked great. My feet stayed dry and warm the whole time. Also, These boots are not as heavy as they look like. BTW, all other people on the lake were impressed with my boots and were asking about them :) I am planning to take these boots to the top of Mt Rainier in June. I am not afraid it's overkill. My feet stayed warm when it was about 20F and wind in the morning, and I didn't feel they are too warm when it got to 50F during the day.