These are really nice quality workout pants- well cut and with good double stitched seams and a nice, medium weight material (heavy enough to be durable but not so heavy as to be too hot).  I believe I can say that sizing runs true to size, although very fitted (as this type of stretchy material would have to be!).  Finally, I have found from past experience that Champion is not always a predictable brand, in terms of quality, although it seems that they are improving their name in this regard.  So I was happy (and you will be too) to see that this was definitely one of their better quality items.  I recommend these for yoga, jogging, and aerobic workouts.