Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Dycem Non-Slip Circular Pad

Good product. Does just as designed. Keeps what sits on it from sliding around. I use this under my Mac Mini to keep the computer from sliding around when I place a disc in the machine. The 5 1/2 inch size pad that I ordered is nearly the perfect size for the 2010 Mac Mini computer with its circular bottom. Totally invisible beneath the computer. And thin enough to not raise the computer in any noticeable way.