Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I was very disappointed

I bought this sippy cup because I liked the idea of the soft spout. I have been using this cup since my son was four months old. When I discontinued the bottle I replaced it with this sippy cup. To my surprise, they leaked. I didn't notice before because I would only give him water in it and not very much at that. I hate the avent sippy cups. I threw them all away and used another brand.