Libbey Cobalt Blue Celestial Sun Moon & Stars Coffee Mug The mug gained popularity after being featured in the TV show Friends. It is marked "Made in USA". It holds approximately 12 oz. The mug's dimensions are about 4 3/4" tall x 3 1/4" across the opening. Good condition, some light scratches on glass. Some tape residue on glass. I did not want to risk washing with products I have. See photos