(Early April) I had just about given up on getting good quality long lasting jeans like were made many years ago by Levi Strauss.  These Carhartt jeans however are just what I have been searching for!  Like the old Levi's they take a while to break in and soften up a bit, but then they wear like iron.  A good quality product all around, they definitely live up to the Carhartt reputation for high quality durable clothing. Now (May 21) After weeks of use, my opinion has not changed.  I purchased these is early April, wear them about 3 days a week, and NO sign of wear except a little normal Blue jean fade. My only regret is that I will not be able to wear these out as I am steadily losing weight and they are getting a bit baggy!  I will replace them with more Carhartts when they get too baggy to wear comfortably!
(End of July)  These are still going strong. I wear them about 2 to 3 days a week to get my wear out as much as possible. Still no signs of any significant wear, and they have softened to a very comfortable pair of blue jeans. Purchased another pair in one size smaller.  This review could be for them also.