The borgia cape look almost exactly like the plain cape. That is if you have not dyed your plain cape. However, the borgia capes ability like that of the auditore cape is to keep your notoriety at zero which is useful to have in almost any situation. For instance if you are drying to sneak around a castle covered by a small army a guards it is helpful for them not to be suspicious of you for if they are you could be in for a world of hurt. However if they don't suspect you of doing anything then you can usually slip in unseen to assassinate your next target. Gaining access to the borgia cape is a very tough adventure. You must first travel to the city Rome. As you have played the game you have probably discovered what are called borgia flags hanging around in random locations. Well in Rome there are 101 Brogia flags. If you collect every singe one of these borgia flags then you will unlock for yourself the assassins creed brotherhood borgia cape.