Collectible piece for VIP Hermes customer only! The Backpocket Is the Latest Bag Accessory From Hermès ! An attractive and functional accessory for Birkin lovers ! It attaches to your Birkin via the back handle , and has the more secure zipper rather than a flap. No longer necessary to dig into the bag for your phone. Now you might even carry your Birkin safer and decide to actually close the bag properly using the turn lock. The Backpocket provides easy access with a zippered pocket that hangs outside the bag.