Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Too fragile to use

I bought four of these about one year ago. The last one exploded today when I was at the refrigerator door adding ice. The whole bottom of the glass blew up and threw glass all over one end of my kitchen. I really enjoyed the use of the glasses while they lasted but I won't even consider replacing them. I treated all four of the glasses with kid gloves but each died for tiny infractions. I never stirred the contents with a metal stirrer. I always hand-washed the glasses with a plastic bottle brush and dried them individually. I didn't let them come into contact with other glassware. The first broke after being bumped on the rim by another glass. The second broke when it slipped from my hand and fell into the sink. The third fell over in an empty sink, and the fourth exploded in my hand while adding ice at the refrigerator door. There is no margin for error with this glassware and I am not going to buy any more just to find another odd failure mode.