Finally, a 2-in-1 costume that doubles as an everyday harness: our Zack & Zoey Butterfly Glow Wings Harness Costumes are great year-round. Glow-in-the-dark butterfly costumes can be worn as a fun Halloween costume or, with the wings removed, as an everyday harness; feature a D-ring for leash attachment Built with adjustable neck and chest straps with plastic buckles for secure fit Adjustable, 3D butterfly wings feature white dots that glow in the dark Adjustable butterfly-antenna headband completes the look Material: 100% polyester Size: Small fits necks 10"–12" and adjusts to chests 12"–17". Medium fits necks 12"–14" and adjusts to chests 16"–22". Large fits necks 14"–20" and adjusts to chests 19"–26". Extra Large fits necks 16"–18" and adjusts to chests 24"–32". Care: Spot clean with warm water. Supervision is recommended while your pet is wearing this garment.