Instruct: Classify a given review into positive or negative sentiment.
Query: Removable Bottoms?

My wife and I received these as well as the short ones as a wedding gift, they seemed they were good quality. Had for about 1 year, had about 6 of them break in the same place, where the thick bottom connects to the thinner sides of the glass. Bottoms seemed to just pop off. Be careful you don't get cut when they do, I had a whole glass of milk on my lap after the bottom popped off and glass shards everywhere on one instance. Were only hand washed.