Reminisce on your favorite TV show with this Friends heat change mug! Designed with the hilarious Friends comedy in mind, this mug is sure to make any fan of the series smile. This standard sized black mug features the word “Friends” along with Joey’s popular pickup line “How you doin?”. When you add a hot drink, it turns green and shows the New York skyline. Ceramic mug holds 10 ounces of your favorite beverage. Not safe for microwave or dishwasher.