Instruct: Classify Amazon reviews into positive or negative sentiment
Query: not happy

I wasn't all that impressed with this collar for the money. In fact I feel a bit cheated that I speant $10 on this collar when it's so very obviously not worth more then $5. The clasp doesn't work unless you pry it open and then push it back closed - it's constantly falling off my dog's neck and some of the stones in the bone charm are already missing. Needless to say I won't be buying anything more from the "Paris Hilton" line in the future.