I bought these boots to use when I ride in muddy, mucky conditions and they work really well.  Really comfortable and warm and totally waterproof.  I've received a lot of compliments on them from much more experienced horse people too!  The only drawback is that they're really roomy through the foot so I need to wear thick socks with them to keep from feeling like my foot is swimming around but in mucky conditions I'm probably likely to want a thick sock anyway.  Very pleased with these boots.