Drink your coffee on the light side or dark side with this ceramic Star Wars Light Saber heat reveal coffee mug! Lightsaber images of Luke Skywalker, Darth Vader and Obi-Wan Kenobi activate when a hot beverage is added. Great gift for fans of Star Wars The Last Jedi, The Force Awakens and Rise of Skywalker! Heat reveal works with coffee, hot chocolate, or any warm beverage. Hand wash only. Not microwave safe.