Excellent comfy and stretchy black pants that I wore right before delivery of our baby girl in late March.  I still wear the pants post-pregnancy...Baby is one month old and these are my favorite pants to lounge around in or to wear when I go on walks.  I even wore them with a cute top to go to the store (I normally do not wear lounging outfits outside of my house).  I wear them on my walks/jogs.  They do tend to stretch out a bit much after the second wear.  But after washing and drying normally, the pants go right back to its size.  I am ordering a couple more - one additional one for myself and one for my sister who does a lot of work in her yard and expressed interest in the pants when I told her how comfy they were.  If you are worried about the other reviews on length (too long), don't be... I am 5'6" tall and the medium size pants fit me wonderfully (the length never bothered me). Enjoy!

Updated 5/16/12...
I loved the medium sized black yoga pants so much, I ordered a pink and navy blue one as well :)  Unfortunately, the pink and navy blue one are not the same style as the black ones...not sure why they sell it like that... they are not the same pants. The black ones have a stretchy top - super comfy. The pink and navy blue ones have a draw string top and run tighter... hope this helps.