Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Collar

This is a great collar if you have a pet that is hard to control. The loop on it is great for keeping the dog close by, like when someone comes to the door! It is also great if they aren't so good at walking on a leash, it keeps them from pulling you around because it tightens up and becomes uncomfortable for them to pull, but it seems more humane to me than a choke collar.