We aren't saying it's not Fireball, but we also aren't saying that it's "Not not Fireball" in our Fireball 14oz. Insulated Mug. No one has to know what beverage you've got in this speckled black, double-wall mug. It features stainless steel vacuum construction with copper insulation to keep your favorite cold drinks cold for 24 hours and hot beverages hot for 6 hours or longer.