I have a pair of Ice Bug running shoes that I have been using the last week during winter trail running. The weather has been so bad that I've hit the local ungroomed snowmobile trails for fear of dying running on the road. These shoes are built as a trail running shoe and actually have studs in them. I think they may be gore tex uppers "Bugdri) as they do an excellent job in the wet and muck. If you run nasty trails, I would try them as they are a step above normal trail running shoes IMO.