Length fits waist 38-40. I'm 37 inches (obviously) so I chose a size larger than 34-36 inches. Well, the size I bought is too long and flaps at the loose end, looks sloppy (doesn't get to the next buttonhole! Since the straps stretch, they shouldn't be cut that long. Stupid manufacturing defect! If I had to order again , I would go down a size but they should warn first time buyers about elastic straps!