Whey you are trying to buy a dress belt, you might wonder if the belt is a right fit for you. Often my buyers ask me "Do you have a size 40?"  I wonder if they are talking about the length of the belt from end to end or are they going by their waist size. If the belt is marked sz medium 36, it usually means that it is a right fit for people with 36 waist. But the belt  measures any where around 39-40. It is best for a buyer to measure the belt from end to end and let their sellers know the size they need.