“Possibly the slimmest bag out there for the 15″ MacBook Pro Retina.” That would possibly be the Hard Graft Slim 15″ Laptop Bag, and although it’s slim, it is big enough to fit your laptop, charger, wallet, notebooks and an iPhone. The opening of the bag is concealed on your body, for that extra bit of security. It has two simple inside pockets and a clever detail – the straps have a secure screw hinge which makes it possible to adjust them to fit to the carry position that feels best for the user.