I have been wearing less than 2 weeks and the button fell out in my hand. will be sending the 2 pairs back

These are good jeans, they fit true to size (maybe just a tad small, but not much), but they are stiff. I think this is true for most FR jeans, thought. The canvas Carhartt's are a bit lighter weight and not as stiff, but they are a bit baggy in the legs. I guess it's mostly preference. I have both types and like them both just fine.