After a disappointing experience with "Zalto" brand glasses (excellent drinking experience but I managed to break half a dozen in less than two weeks), I was cautiously optimistic when buying Josephinenhuette glasses. As I expected, the aesthetic beauty of these elegantly-shaped glasses is matched only by the pleasure in drinking from them. The pleasant surprise has been their durability. To be sure, they are delicate objects, but I am so far very impressed with their strength. I have my fingers crossed that they will remain intact for a long time to come!