The expandable feature is great if like me you can go plus then minus a couple of pounds over the course of a given month. You feel comfortable and have the feeling you wear pants that fit you perfectly at all times - even after a nice dinner where you indulged a little too much. If you travel a lot for business, they are also easy to pack, just fold them nicely and they will be ready to wear without being wrinkled when you open your carry-on. Also you can wash them at home and save on dry cleaning expense. And they are much classier than khakis if you are looking for something dressy. Great budget purchase.