As already been mentioned, ditch the cotton. As far as waders go, I wear breathable and have worn them with temps in single digits. I just wear wicking thermal underwear and fleece pants underneath. In warmer temps I wear a pair of nylon quick dry pants. My waders are stocking foot and my boots are the new non slip rubber sole. Haven't used felt in years, but I fish mostly spring creeks with grass banks and could not get a good grip with felt.

Dave