I would also recommend the Stella Polaris Mountain Horse boots. I got a pair because my feet get to the verge of frostbitten when I ride in regular boots, no matter how many pairs of socks I wear. These boots have the faux fur allll the way in the boot, even in the foot. I've been okay when it's been 27F with a windchill of 10F. Much colder and I'll have to think about a thicker pair of socks, but the zipper on the mountain horse boots tends to be more durable than others, and the Stella Polaris has an elastic band that goes down the side that makes calf fit a dreaaaaaammmmmm. :) I plan on having them for years, and if you buy stuff at Dover, they have an amazing return program, so any damage and they'll give you a refund or a new pair. We've been told at the nearby Dover store that people come in with new stuff and rediculously abused things, and can still return them. So I think they are worth saving up for.