5 step height adjustable notebook stand with 2 cooling fans and sturdy reinforced aluminium inlay to bring your notebook screen to a ergonomic viewing height and distance improves the cooling efficiency of your notebook and protects your furniture from heat protective rubber pads prevents your notebook from sliding and scratching lightweight flat and foldable design that easily fits your notebook bag suitable for any notebook with screen size up to 17 4 usb powered fan no mains power co