This bag is the same as the No. 2 Regular Owl Ear Front Bags except there are two additional bags sewn on so that the bag can rest on a car door with the window down. This can also be used by disabled hunters to shoot from a vehicle. Legal with permit in some states. Also, this may be placed on other rounded areas to shoot on such as a wooden fence railing (three bags in one). Bag shipped empty- fill with sand or tumbling media.