I bought two pairs of these to see which pair fit better. (40w and a 42w).  I planned on returning the pair that did not fit as well.  Both pairs fit very nicely and so I literally kept both pairs.  I have worn these pants for the last 4 years and they wear well, especially with an extreme amount of lifting and bending.  I work in a professional environment but with these pants I have no fears about "getting it done" and doing what needs to get done to help everyone.  The wear that I began to see on all of the old pairs was from the large billfold in the back pocket got caught on pallets of freight as I slipped between pallets.  The back pocket on each pair had taken several hits.  Since I no longer wear a wallet when I work I do not have that problem.