Height adjustable design lets you the viewing angle for ergonomic comfort and better viewing. Sturdy construction with nonslip silicone pads keeps your device securely in place and protects the surface from scratches. Open design promotes airflow and heat dissipation to help keep devices cooler during use. Versatile compatibility with a wide range of devices, including smartphones and tablets of various sizes. Improves surface user experience when used with laptops by elevating the device and reducing heat buildup on the keyboard and wrist rest areas for more comfortable operation. Key attributes at a glance: Function: adjustable height, open airflow, secure hold Compatibility: phones and tablets of different sizes Material / components: nonslip silicone pads, sturdy frame Performance: stability, ventilation, improved comfort Use scenarios: 1) Laptop on a desk during long work sessions to promote cooling and more comfortable typing. 2) Tablet or smartphone for hands viewing, reading, or video calls in portrait or landscape orientation. 3) Desktop or shared workspaces to keep devices elevated, stable, and easy to access.