The build quality overall is good. The area of the Cooler Master is of solid, no flexible metal, the rubber corners prevent locking or slipping of the notebook. The position of the fan is adjustable, tool in seconds. Only the quality of the fan is not good. After just 2 weeks of daily use arises in me when turning on the fan a loud, unpleasant sound one, which disappears after about 1 minute of operation.