1.The hollow design at the bottom allows the heat to dissipate quickly, avoiding the phenomenon of the notebook crashing due to overheating. 2.Double triangle support, stable and not shaking. 3.7-9 gears, double-layer adjustment, multi-gear and multi-angle adjustment, you can adjust different heights according to your height and sitting posture. 4.Silicone non-slip mats are used at the bottom of the bracket and the support part to prevent the notebook from slipping and prevent your machine from being damaged. 5.The buckle is stable, it is firmly stuck and not easy to slide, the structure is stable, and the load-bearing is stronger. Material: aluminum alloy, siliconeColor: silver, grayProduct size: 29*5*3CMPackage contents: bracket*1, flannel bag*1