Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very Fragile Even When Extreme Care is Taken

I have bought several sizes of the Bodum glasses. They don't last very long. We gently hand wash and dry and pour liquid in first before adding ice. Even with all this care, the inner glass seems to be extremely fragile. I had one crack today when I put room temperature liquid in it and then added ice. Too bad. They are pretty. I think customers should be refunded for these as they are obviously flawed.