My husband is a welder by trade and needs a really rugged jean to hold up under the conditions that he works in.  He was very pleased with the quality and fit of these jeans and believe me if he didn't think they would hold up he would let me know.  I usually buy him Levi's at JC Penney for at least twice the price.  We thought they were fairly heavy duty but this material appears much more durable.  I would not recommend them for a "dress jean" as they just don't have the look that we would want, but for casual and demanding work these appear to be the answer.  The price is excellent.  We ended up buying him six pair.  I'd give them a 5 star rating but haven't washed them yet.  After I've washed them several times I'll try to add some more information.