These glasses are described as holding 5-5/8 ounces. A serving of champagne is 4 ounces, so I was excited that I would be able to fill my guests' glasses most of the way while still giving them a reasonable portion.The glasses arrived this morning, and I could tell my looking that they were not 5-5/8 ounces. If you fill one to the brim, it is 8 ounces. I can't imagine how they arrived at the very specific (yet apparently arbitrary) 5.625 number.My two key criteria were that (1) I was looking for a glass that would hold around 6oz and (2) I wanted it to be tall and slender. So, I can only give this glass 1 star. It is tall and fat, and holds nearly 1.5 times as much as they say it does.Other than that, it is as described.