Tumi Larkin Portola Convertible Backpack Ballistic Nylon 。This is a great Tumi convertible backpack purse made out of nylon material, offering a degree of water resistance. It features a separate laptop pocket in the main compartment, which easily fits my 13\" laptop, and possibly larger laptops. The front pocket has a key ring holder. The back has a zippered luggage handle pass through allowing this to be attached to your rollerbag. When not in use, the pass through can be closed with a zipper and serve as an extra pocket while worn. There is a top handle that stores in its own compartment (shown stored in the photos). This is a great little bag that definitely has years of life left in it.