Instruct: Classify the given review into positive or negative sentiment.
Query: disappointed by the poor quality of this product

- The silver part has a cheap looking. Both poles have rough surface and I could hardly pull the stopper (sorry don't know if this is the correct name; the removable part that you put behind your ear) off the pole.- The tortoise part looks like plastic and has a dim cheap looking. I'm still not sure whether it's real tortoise or not. It doesn't have that nice smoothness and luster that good tortoise has.Also, this product is way bigger than I thought, but that's mistake on my part. I didn't pay much attention to the size.All in all, I would rather pay double the price to get a nicer product, because I don't feel like wearing these at all. I'm going to return them.