At nearly twice the size as your average flute, you might be wondering how Brumate did it. The science is easy. If you want to increase the size of the traditional 6oz flute, you have to prevent the beverage from warming up and find a way to retain the carbonation. Brumate did both. Specs Bevguard technology Height: 6.1" Diameter: 2 3/8" Capacity: 12oz