I can wear them but they are not comfortable.  I have thick knees, thighs and smaller waist.  I ordered the 18w.  I could have wore 16 w for the waist area, but the knee is tight and seem to drag them down after a while, then they sag in the crotch while wearing the 18 w.  So they are loose in the waist.  I will keep them but will not order again.