Instruct: Classify Amazon reviews into positive or negative sentiment
Query: awesome!

I love this alternative to sitting on the ball at work. It works much better in the office environment then "just" the ball. Its more comfortable and functions better with the wheels. I recommend it! Just be sure to ease yourself into it - dont start off sitting on it all day - just a few hours a day until you build up the strength...enjoy! You wont regret it. You will always be "on the ball" at work! :)