Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A good strong case

This case gives the blackberry a nice snug fit and easy access. The clip is tough and stays put unlike others I have tried. About the only flaw is that the top two corners aren't covered by any of the material. I tried the other case where the phone slips in sideways, but the phone kept falling out and it was bulkier than this one.