Holding 16 ounces each, these heavy mugs are shaped for serving beer in traditional style. They're made of thick glass, so you can frost them in the freezer and then use them to keep beer cold to the last swig. Though the mugs' insides are perfectly round, the exteriors have 10 facets. Perfect for root beer floats as well as beer, the mugs measure 9-1/8 inches high and 3-3/8 inches in diameter. They're durable and dishwasher-safe.