I had to send back...Chinese sizing doesn't work for averaged size people.  I tried to get my equivalent size...the legs and hips fit decently but the waist and tummy are way too big and I can't work out in them - they want to fall down.  I realize going smaller will not help.  In order to get it small enough to fit my waist and tummy,  the legs would be too small as well.  If I had a big belly I guess these would work.  My recommendation to athletically built people who wanted these to work out in...don't bother.