I purchased these a few weeks ago and love them.  Love the color, the fit, the zippers, EVERYTHING!  You cant go wrong with Carhartt.  My husband has had a pair for 8 years now and they are still wonderful, just a bit worn on the hems and the knees.  So far I have used these while splitting wood, shoveling snow, and plowing, and they keep me warm, and more important, they stay up.  My old work pants would always fall down.