Be the devil of your party. Get your staff something special to wear at your next Halloween party for all their hard work. Grab the Light Up Green Devil Horns. This party favor is perfect for most adults as a one size fits most. Simply activate this headband on the side by switching the device to on. Comes packaged wholesale in a pack of twelve individual pieces. Batteries are included for a quick and easy use. Measures 6.25 inches by 6 inches in size. The horns measure 1.25 inch by 2 inches.