These LED Flashing Mouthpieces are sure to make everyone do a double take. They Flash and flicker brightly from your mouth with the press of a button. They're held in your mouth with this easy to wear, plastic, Mouthpiece. There are two versions to choose from: the fun, Flashing Mouthpiece which is basically hidden in your Mouth or the Vampire Fangs, Flashing, Mouthpiece which gives you a little extra "bite". Both Styles have fast paced multicolor flashing modes.