starbucks Swirl Mug - Yellow, 12 Fl Oz A ceramic coffee mug with graceful curves and hand-dipped glazing. Swirl Mug - Yellow, 12 fl oz As rich and creamy as french vanilla, this Swirl Mug features beautiful hand-dipped glazing and elegant curves that please the eye. It's part of our Swirl Mug Collection, and it makes a warm and inviting addition to your home. Holds up to 12 fl oz. Dishwasher and microwave safe.