Instruct: Classify Amazon reviews into positive or negative sentiment
Query: top notch!!!!!!!!!!

I am a teacher with many keys that cannot be lost. Use stockroom keys, door keys...all day and this thing works brilliant. Strong, durable, and plenty of length. It does not twist and tangle. Have used it the entire school year, still going strong! I also connect my flash drive with a quick release. Used to always forget to take the flash out of my pocket..into the wash. Not now! Great value and quality!!!!!!