ARMPIT TO ARMPIT(measured along the outside). I strive to receive 5/5!!
That's they're new system. Heavier items will cost more.So I do sometimes add a couple of dollars to the cost to cover myself. I guarantee everything I sell. However, I go to great lengths to provide correct measurements and nice big pictures of every detail. If you fail to do so, or the piece doesn't fit properly, I'm sorry, but there's nothing I can do.
However, I sometimes don't get around to leaving the feedback for a week or so.