Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Not what I expected...but I didn't read the specs closely.

Wow, I thought to myself that this would be a great thing to have at work and use to get some circulation going in my legs. I could get more circulation and exercise by just lifting my feet up and down by themselves.I guess I was looking for more of a resistance and an energy burner, but this product really is just for helping circulate blood and to keep your ankles from swelling.The plastic doesn't look like it will last over a long period of time, the product is small, and does not have a lot of flexibility.