Instruct: Classify an Amazon review as either positive or negative.
Query: Excellent product - performs as advertised

I have an incredibly obnoxious border collie that we hated to walk due to his incessant pulling/choking. This collar has turned him into a completely different animal. It only took about 10 minutes on our first walk with the gentle leader before he was sticking to my side and quit his normal pulling behavior. A+