Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

[EX Q]: Product was defective from day on and lasted a whole 32 days and now will inflate but by the middle of the night you sleeping on the carpet.
[EX A]: Negative

[EX Q]: If you're willing to trade a little style for some substance and save some money in the bargain, this is a very recommendable device. My Apple PowerBook power supply died in what is apparently typical fashion - sparking, crumbling wire where it meets the brick - and none of the Apple stores or CompUSAs in Atlanta had any in stock (which is curious in itself). I resorted to Amazon and decided to try this one out and I've been pretty happy with it. It seems sturdily constructed, and the breakaway cable is a surprisingly handy way to save on tangles. I do miss the plug-in charging light, but that's about it.
[EX A]: Positive

[EX Q]: I DID NOT GET THE SLACK THAT HAD THE WAISTBAND. I GOT SLACK WITH NO WAISTBAND, SO I SEND THEM BACK AN WAS TRYING TO GE A 42 29 BUT I RECEIVED A E MAIL STATETING THAT THE PRODUCT WAS NO LONGER AVABILITY. SO FAR I'AM NOT SURE WERE MY REFUND WENT. PLEASE LET ME KNOW.TOM ATKINSON
[EX A]:
Negative