The justly famous Rabbit Ear Rear Bag can be used with any front bag on this page. The same size as the #1 Stard Rear Bag with the addition of another complete two compartment bag sewn to its top. This compartment which forms the "ears" is 4 3/8" by 4 3/8" at its base. Each is is 2 5/8" high and is filled seperately. This one has a heavy bottom.