I went to lululemon over the weekend to get a 'refill' of all things lululemon fffabulous, i.e. bras, tops, pants, cropped pants, you name it...and I got the Wunder Under Crop in static charcoal. These pants are the most comfortable pants I've ever tried. They are made of a very thin and stretchy fabric that feels like a second skin, so much you just won't feel them when you work out. I also love the static charcoal color. It is a nice change from your typical black sweatpants, but is still dark enough to go with everything and hide the little imperfections. And you can also wear them outside of the gym as leggings with sheepskin boots.
As far as sizing is concerned, I went up two sizes in those because the fabric of the grey charcoal crop pants is 'tighter' than the lululemon signature fabric, so I recommend you try them on first.
