The QcK Limited line represents the pinnacle of gaming mousepads, building upon SteelSeries' 15 year legacy of surface performance and innovation. QcK Limited Mousepad Building upon SteelSeries' 15 year legacy of gaming mousepads, the QcK Limited is the pinnacle of surface performance and innovation. Micro-Woven Cloth Engineered to improve mouse glide, SteelSeries new micro-woven cloth has minimal friction and a silky-smooth texture. Perfect Mouse Tracking Tested by the top mouse sensor manufacturer, the high thread count and surface variation optimizes tracking accuracy for both optical and laser sensors. Never-Fray Stitching Understitching along the edges of the surface ensures it will never fray or peel.