Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: They don't build them like they used to.

I have two Fellowes gel wrist rests that were purchased at least three years ago. They are used every day and are still in excellent condition. The new one, which I have had for only a few months and have used very little, is already starting to show signs of wear. The gel is permanently indented where my left wrist rests. The new wrist rest is approximately half as thick as my old ones and the gel feels much softer. Very disappointing.