Libbey 3408 51 Ounce Super Globe Glass - Specialty Cocktail Glasses Each Libbey Super Globe is handblown. As such, no two are ever exactly the same. While Rated as 51 oz, they can actually easily contain 56 oz with room to spare. (The one my husband measured the capacity of took 62 oz to to very top.) Libbey is known for making sturdy, long-lasting glassware. Many of their pieces remain in use long enough to be passed from one generation to the next. The Libbey Super Globes I have on offer were purchased at an estate sale. They have been well cared for and. Have no cracks or chips.