Instruct: Classify the given Amazon review as either positive or negative.
Query: Worked great...until it melted

It worked great until a hot summer day melted the plastic. I had the EZClip on my window and also had a sun-shade in the car so I don't know if it just got too hot between the shade and the window, thus melting the plastic, or if it just generally can't withstand direct sunlight in warmer states.