Although it took 2 tries to get the right size, I love these leggings.  So much warmer than regular knit leggings.

I did have a different sizing experience from the other reviewer, so I'll add my details to possibly help someone.  I'm 5'6", 122 pounds and normally wear a size 6 and according to the size chart I should be able to wear a size Small.  However, Small was way too tight, but the Medium fits perfectly.  It could be that unfortunately most of my weight is in my not-so-skinny bottom and thighs!

They are also a little longer than cheaper tights which is a huge plus in my book.  I'm back to buy more.