Well, all I can say is that my Jag jeans are my sweatpants. I wear them on long flights, car trips, and on my "hang around the house days". Needless to say I own a couple of pairs.
The fabric is a bit a stiff at first, but softens quite nicely after a few washes. My husband even tossed a pair into the dryer a couple of times without any noticeable problems. As a matter of fact, as they age they can get a bit looser, so a stint in the dryer brings them back into shape quite nicely. My oldest pair is a couple of years old and still in good condition. The only drawback is that I can't tuck with them, but who tucks into their sweatpants anyway?