Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Get roof racks and cargo box instead!!!

I really wish I had just purchased roof racks and a Thule/Yakima cargo box instead of this. The straps go through the doors which doesn't work if you're tall, and the car clip straps scratched my car up. The straps also didn't stay tight, which led to the bag flying off my car at 70mph... Tore up in several places. Thank god no one was behind me at the time or they could have been killed. You can also only store lightweight stuff in it or it will dent in your roof.Complete waste of money in my opinion... Do yourself a favor and spring for quality roofracks and a cargo box.