Instruct: Classify a review into positive or negative sentiment.
Query: Not good for sleet!

I bought two of these for my vehicle. The first time we had a sleet storm, the ice built up on them terribly, even though I have great defrosters. They say on the package that they are good for winter blades, but I disagree. When I knocked them on the windshield to dislodge the ice, the mounting clip shattered on one. I sent them an email to request the part since it was only 6 weeks old and received only an "message received" email in return. Luckily I had the old blades still in the truck, otherwise I could not have gotten home. I have traditional Bosch blades on there now. Cannot recommend them or their customer service.