I just found this link:
OK, what do high end denim jeans have to do with yoga? Or is it simply the marriage of 2 "trendy" items in our marketplace?
Check out the ‘yoga as valued-added feature’ thread.
High end jeans are the Union (or yoga) between materialism and emotional retardation. Therefore, they are yoga jeans.
How’d I do?
[QUOTE=David;44548]High end jeans are the Union (or yoga) between materialism and emotional retardation. Therefore, they are yoga jeans.
How’d I do?[/QUOTE]
Excellent, David 
Wear a jean when we are doing yoga? That sounds amazing.
ridiculous
They’ll try and sell anything these days.
Jeggings!
lol, I don’t get it. They look weird.
then there’s pajama jeans…
I actually saw a yoga instructor teaching in these…she looked comfortable enough, but I’ll stick with my cotton yoga pants 
They might be jeggings (jeans that are actually leggings)