I strongly advise you against buying boots off of this site.  I made the mistake a few years back of buying boots online, just based on my shoe size.  i have never had more painful shin bang in my life.  go to a shop with a good bootfitter and get fitted for a pair of boots.  It is worth every penny.  You will not regret spending the extra money. Properly fitting boots are probably the most important part of your setup.