Given the task definition and input, reply with output. Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

For an item that should be a life saver, this is not. I really liked being able to take the cup with me when camping and having warm water anytime on my way home. After less than 5 days of use, no longer would turn on. It came back on, but never warmed up. Very frustrating!! Would not recommend at all :-(
Bad review