I ordered the 2-pack in black and nude.  I ordered by my panty size, as many suggested.  Perfect fit.  These are not bike shorts, nor would I wear them as such.  However, I would wear them under a short dress or even a tunic length top as long as it was mid-thigh length. These are too thin, in my opinion, to be worn as bike shorts.  Some might; I would not except around the house.  They are well made and stretchy, and are meant to be more of a smoothing undergarment.  I am very happy with the quality of these slip shorts and my purchase.