Zalman Minimized Noise Cooler for Notebook (NC2000B) -- Aerodynamically-designed notebook cooler with minimized noise and enhanced user convenience. -- Sleek design incorporating a high quality 3mm thick aluminum panel with a fine curvature and great cooling performance. -- One-body design composed of different materials provides a sleek appearance. -- Premium aluminum treated with D.S.A. Surface Processing. * D.S.A.( Diamond Cutting, Sand Blasting, Anodizing) -- The Rubber Grip Strip prevents the notebook from sliding.