Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good Idea - terrible product

I bought 10 of theem since idea was great. Design is very bad.From the practical usage:1) Plastic rings are too weak- when trying to set rings on a pole, plastic ring cracked due to the fact that distance between two rings was too high2) netting is not tied well to the rings- when trying to set rings on a pole, netting fall off - had to tie it manually.