Classic Base Bag (Black) with 8 unique exterior shells.

Owning a Miche bag means never having to switch handbags again—it’s a beautiful thing! The unique magnetic interchangeable exterior Shells allow you to change the look of your bag anytime you want without the bother of moving your things to a new purse—often in 3 seconds or less; it’s a real time saver!

http://www.michebag.com/index.php/why-miche/how-it-works.html

It's around a $200 value. Each shell sells from $25-30 each.