Detailed Instructions: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Q: I contacted Anchor Hocking and they said that they do not recommend liquids over 160 F degrees to be placed in these mugs. Other reviews seem to imply that people do put boiling liquids in the mugs, but the company does not seem to sanction this use.I have had glass mugs crack on me before because I was not as careful as I should have been in reading the advertised claims, so I am now very carefull. I passed on this product, although they certainly do look beautiful.
A:
Negative