Legendary Micro-Woven Cloth With over 10 million sold, the SteelSeries QcK is the pinnacle of surface performance and innovation. Pinpoint Mouse Accuracy Tested by the top mouse sensor manufacturer, the high thread count and smooth surface optimizes mouse tracking accuracy for both optical and laser sensors. Never-Slip Base The durable, non-slip rubber base is designed to eliminate unwanted movement and provide a solid platform for competitive gaming. QcK Series The QcK Series' legendary micro-woven cloth has made it the world's best-selling surface. Available in 3 sizes, the QcK is the gold standard for gamers everywhere.