Made of a high-quality cloth material with an optimized textured surface, the SteelSeries QcK Diablo® III Edition, provides players with both a smooth and consistent gliding surface. Its specially designed non-slip rubber base prevents the pads from sliding no matter what surface the mousepad is placed on. Optimized for optical and laser mouse technology, the SteelSeries QcK has been tested by professional gamers around the world and has been used to win more tournaments and competitions than any other mousepad across the globe. The SteelSeries QcK Limited Edition mousepads are designed and branded in cooperation with game developers, publishers, professional teams and for tournaments.