Designed as a place to put your jacket, overcoat, tickets, magazines, photo or electronic equipment, etc. It will allow you to almost double your carry-on capacity. Simply fill the Saddlebag with your items and slip it over the sliding handles. It will roll down the isle of the airplane on top of your Porter Case. Slip it off at your seat for easy storage. Stack it on top of your other luggage when in the cart position. Made of Black 400 denier material, strap handles, removable shoulder strap, insignia, three storage areas, Velcro(tm), and YK fasteners.