Burton Expediton Pant
Here's what other sites are saying:
The farther you venture in pursuit of powder, the more you're exposed to tough terrain and conditions. Enter the Burton Men's Expediton Bottom. The whopping 320g four-way stretch microfleece of Burton's DryRide Ultrawick fabric is built for superior warmth and it wicks like a boss, too, to keep you just right even if it is damn near ridiculous out there. Go get the goods, again and again, with no need to wash these every time, because there's an anti-microbial finish to keep the funk at bay.