"This innovative glass, reminiscent of a wine glass, had to be able to hold the contents of an entire 33 cl bottle. Up until then, there had never been such a large beer glass. The glass is specifically designed to offer a more complete experience of the beer. The rounded shape allows Duvel's exquisite flavour and aroma to be fully experienced by the drinker. The way in which the glass narrows towards the top also helps retain the carbonation, therefore preserving the head."
This helped pioneer a craft beer movement...The glass does matter!