Versatile design defines a cool, utility-minded backpack cut from tough ballistic nylon and supple leather and outfitted with padded straps and plenty of pockets to keep your gear, electronic devices and a laptop up to 15 inches stashed away safely. A smart Add-A-Bag sleeve means you can attach it to the handle of a rolling carry-on, while a zipper wall separates the front and back compartments for organizational ease. Style Name: Tumi Alpha Bravo - London Backpack. Style Number: 5524366 1. Available in stores.