Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Rocket

The quality of the rocket is poor. The balsa fins break easily and and are difficult to cut, even for an adult. Inserting and sealing the soda tube is tricky. If vinegar gets into the tube, the soda sticks and doesn't mix. We had 3 kits and didn't get any of them higher than 30 feet, far less than the advertised 200-300 feet. We had fun with them anyhow for about a half hour. After that, the rockets were too broken up to use. For the value we got from the rockets, our money was essentially wasted. I do not recommend this rocket kit.