Libbey #5262 - Gibraltar 34 oz. (1 Liter) Super Mug - 12/Case. Your customers will never go thirsty again with this Libbey 5262 Gibraltar 34 oz. (1 liter) super mug! Boasting a thick, sturdy handle with a thumb rest for additional comfort, this 1 liter mug is sure to please both patrons and bartenders alike by limiting the need for constant refills. It's the perfect choice for celebrations or sporting events, and thanks to a durable, heavy base, it won't be toppled over easily.