Starbucks&reg; Stacking Mug - Holiday Green 12 Fl Oz - 2 pack A green ceramic stacking mug with the Starbucks name laser-etched on the side. Part of the Stacking Collection. Starbucks 12 Oz Featuring an evergreen color that's perfect for the season, this stackable ceramic coffee mug is a beautiful addition to our Stacking Collection. Buy several mugs and stack them together, or mix and match with other stacking mugs in the collection. Laser-etched Starbucks name on side. Holds 12 fl oz. Dishwasher and microwave safe.