Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Feels good but does not stay longer then two months

It was great fo a couple of months. After a couple months of use it became loose and no matter how I try to repair it, it stays loose. I liked it so much that I bought another one. It became loose in less than 1 month and it is impossible to fix it no matter what. I am not going to buy third one. But if you make it work - it feels very good.