Instruct: Classify Amazon reviews into positive or negative sentiment
Query: tin foil glued to thin, flimsy plastic.

The seller is being very tricky in describing this as a "mirror". In actuality, it is reflective tape on flimsy plastic. It is about as reflective as aluminum foil, and only slightly more rigid. You'd be far better off either buying an actual signal mirror, or polishing a piece of metal. This thing absolute junk. Don't waste your money on this, you will not be satisfied. Once I opened mine and saw how cheap it was, I immediately contacted the seller, who basically said "tough luck". Spend your $4 elsewhere. This is a case of getting even less than what you paid for.