Love these pants.  I had a pair of these that I wore a couple times a week for about 6 years before they started getting some serious holes.  These pants are similar in quality to what Levi pants were 30 years ago.  Top quality, thick, heavy duty canvas, riveted and triple stitched.  When you first get them they are stiff and have to be broken in.  These in particular are also made in the USA (not all Carhartt's stuff is).