Update -- OK, he has decided he likes the fit of this B480 Jean and asked that I get him 5 more pair.  Obviously not only women are prone to changing their minds.  Maybe he likes to softer jean now that he's retired!

I purchased these jeans after doing a search for Carhartt B18 style.  These came up and sounded like the B18, but upon receipt they were the B480 which is a softer denim than the B18.  My husband had previously gotten some of the B480 and he did not like them for construction work.  They are not nearly as durable as the traditional B18 style.  No problem, as they were returned promptly at no cost to use for the return shipment.  Live and learn.