I already have a pair of snowboots that don't even go halfway up my calf.  They're great for walking around outside, but you can't feasibly do ANY activities with them without getting snow in them.  I decided to invest in some taller boots that would allow me to run around in deep snow.

These are absolutely FANTASTIC.  In fact, even with thin socks they're almost TOO warm.  Minnesota weathers are cold, and often the temperatures can go into the negative double digits.  I haven't really put these through the ringer yet, but they're ridiculously warm and nearly go all the way up to my knees!  The cinch at the top is great to make sure no snow sneaks in.  I can't wait to really give these a thorough test of their true durability.