The glasses of the series of Denk'Art Zalto are a real dream. The champagne glass impresses purely visual by the elegant intricacy. Haptic falls a first on the ease of the glass. If you slightly compresses the glass opening between 2 fingers can feel the flexibility of the glass. It can compress without breaking easily. This only works with a hand-blown glass. Drinking can be felt barely the delicate edge of the mouth.
In direct comparison with a "normal" glass you think in fact you drink a different champagne. Of course, I did a blind tasting.
The glass is usually washed by hand but survived transitions without blemish and without problems already several machines. I would buy it again at any time!