Halloween Pet Costumes are a great way to include your pet in the Halloween festivities! Halloween Devil Costume is fun and irresistibly cute! Great for dress-up, parties, photo opportunities, or get togethers. Devil Costume is a two piece suit. It features an adjustable, elastic Velcro tabs, making it easy to put on and take off. SMALL 10' - 13' MEDIUM 14' - 17' LARGE 18' - 22'