portable, adjustable aluminum alloy stand featuring built-in USB cooling fans and flexible 360-degree folding jointsAdjustable Design: 360-degree rotatable joints on each leg let you customize the height and angle for use in bed, on the couch, or at a desk.Built-in Cooling: Integrated USB-powered ventilation fans help keep your laptop from overheating during prolonged use.Build Material: Constructed from lightweight yet durable aluminum alloy with auto-lock joints.