I've heard here at Amazon for the first time by Zalto glasses. As a connoisseur of fine wine, I looked around the internet - then my decision was clear: I'm going to buy Bordeaux glasses namely by Zalto. When I got the glasses delivered by Casa Due I marveled very: the glasses looked very fragile. I sink still in the dishwasher and everything is perfect. Positive I personally feel that the glasses are protected from deterioration. Moreover, all glasses of Zalto be made without lead additives. Granted a glass for 30 euros is not a price hit - in the face of the effort, which is operated in the production the price is justified. The wine tastes quite excellent from the glasses of Zalto My Rotweingläser of Nachtmann, which I've used I ask Amazon for sale.