This ultra-spacious backpack built from tough fabric that's resistant to abrasions can hold heavy books, laptops, and anything else you might need for the day or a quick getaway. It's designed with an Add-a-Bag pass-through slot in the mesh-padded back that works with telescoping handles of compatible Tumi luggage for easy off-the-shoulders travel. Style Name: Tumi Alpha Bravo - Nellis Backpack. Style Number: 5595388. Available in stores.