Pacsafe ultimatesafe z15 anti theft backpack charcoal in todays always on world of connectivity there is nothing worse than having your electronics stolen the z15 backpack offers plenty of space which fits a 15in macbook is slimline compact and perfectly complements the mobile warriors wardrobe and stash of valuable electronic gear the tough outer canvas style fabric masks an even tougher slash resistant patented 360 exomesh locking system that prevents bag slashers from breaking in