Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great mouse!

I grabbed this mouse for $10 on "Cyber Monday" and it is worth 5x the price. All the features work well and as advertised; the only potential knock on the mouse is that for a laptop mouse, it is a bit large. It is very comfortable and ergonomic but if size is a main concern, it may not be the best choice. Otherwise, buy it!