Abstract: Decorative combination structure comprising a combination of a flexible bag member and a flexible sheet which together simulate a fanciful conception of the appearance of a giant bat. The flexible bag is arranged for receiving a plurality of light-weight and preferably inflatable filler elements and for assuming a substantially tubular shape with rounded ends when so filled so as to simulate a bat body, and the bag member is provided with facial indicia of a bat. The flexible sheet is shaped to simulate bat wings and is attached to the bag. A plurality of closure or bunching means for the flexible bag are provided to cause ear-like protrusions at be formed at the initially open end of the bag member. A plurality of fastener means are provided for fastening the bag and the wing-like sheet together.