Instruct: Classify the given Amazon review as either positive or negative.
Query: Emergency Mylar Blanket 52" X 84" - Pack of 12 Blankets

If there was a ZERO stars or NEGATIVE Stars rating this product would defintately be a candidate for receiving such! These particular blankets were purchased in hopes of making disaster relief packages and after receiving them and opening one to insure the product I am seriuously dissappointed... These are not Mylar blankets; they are more like window film / overpriced aluminium foil. I have packaged hundreds of emergency relief boxes with mylar blankets before and these are a complete waste of your money!!! I would compare these "so called blankets" to window tint/film used for reflecting light vs the actual intended use of emergency warmth. Definately disappointed and strongly incourage you buy elsewhere!