Really interesting information, thanks. A couple months ago I picked up some gray wash 501s at Macy's then had the lower block tapered a bit by my tailor. They've become one of my favorite jeans rivalling (almost) my KMW 1980s. But in the back of my mind I kept saying, 501s never fit like this before, what happened? I just checked, the back tag is there. Cool! yep, that's exactly what I thought when I put them on!