Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: A Complete Waste of $. Only Lasts for a Few Weeks

I initially loved these sun shades. They stuck to the windows of my SUV well, and I loved that they were retractable for times when my boys wanted to look out the windows. After a couple of weeks, we were taking a long trip in our truck, so I transferred them to our truck. They worked ok. They did come off a few times. When we got home, I decided to put them back in my SUV. They would not stick at all. The suction cups were no longer working at all. I tried everything to get them to work. I am SO disappointed in this purchase, and would not recommend these to anyone.