APXC Monday Mug Magic Coffee Tea Cup Mood Changer Color Changing Gift When cold the mug is black with a sad looking face )-: When hot the mug is green with a smiling face (-: Product Dimensions: 3.2 x 4.3 x 3.5 inches ; 8.8 ounces Monday Mug changes mood when hot Packing:1xMonday Mug