11oz Funny Saying & Quotes Mug, Bye Felicia Color Changing Mug Morphing Coffee Mugs Cup Holds 11 Ounce Magic Heat Sensitive: Just plain black in color when it's cold,mug will turn white and reveal Design only when filled with a hot beverage New design, novelty, funny.sturdy and durable For coffee,tea and hot chocolate Awesome Gift Idea for Christmas Day or Birthday