Instruct: Classify a given review into positive or negative sentiment.
Query: won't fly due to defective design

It would never fly; the string attaches to the very top so it can spin below; what this means is that when the wind blows against it or when you pull the line, you loose lift since the kite at that point just levels out in the same direction of the wind. We could never get it up in a variety of conditions, and if you pull at all on the line to try to help lift it up, the effect is the opposite, it looses altitude and down it goes. You would think the manufacturer would product test it at least once to notice it does not fly...; we just had to throw it away.