Pacsafe's Z 28 Urban Backpack uses highly protective innovations to protect your gear from people and weather whether you're traveling or commuting. Its steel lined eXomesh cage system protects your gear from thieves who slash backpacks, grab what they can, and run. The Anti Theft locking system includes a wire that wraps around poles, a lock, and three compatible keys. Pacsafe built the backpack out of water resistant canvas for weather protection and outdoors durability. The Z 28 also features a removable laptop sleeve that fits up to 15 inch computers.