Ahern Irish Coat of Arms Glass Coffee Mugs - Set of 2. Start your day with your favorite beverage in this beautiful glass coffee mug! Each glass is expertly and permanently sand etched with your very own authentic Irish coat of arms. The thick glass it's made of is meant to keep your hot drinks warm for longer and comes with a sturdy glass handle. Holds up to 16 ounces of your favorite drink! With over 1000 Irish family names and authentic coats of arms to choose from we're sure we have yours!