Cut the cake, it's time to celebrate! Wish your friends or loved ones a very happy day with the Happy Birthday Mug. Featuring a colorful birthday cake design, this mug is a simple and thoughtful way to make their special day even happier! At Coton Colors, each piece of the Happy Everything!™Collection is designed by our team of in-house designers with functionality and style in mind to ensure that your home is filled with happy. Curate your own collection with our bold colors, fun shapes, and seasonal motifs and be inspired to find a little happy in everything.