Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I bought 5 obus form products

I bought 5 obus form lumbar support products, 3 of this model. 4 of the 5 products were defective!! Only one of these half back cushions held air and I really like it--- I like it so much that I wanted another. That is why I ordered more. The rest were all defective. 3 were defective because they wouldn't hold air; the other had a 8" rip in the fabric!