Using passive air circulation instead of USB port, this unique portable lap desk protects your lap from heat caused by notebook computers, while protecting your computer from overheating. Ergonomic and extremely lightweight, this computer lap desk is specifically designed for lap use. Use it anywhere - in your car, home, or traveling on planes and city transportation. This laptop-cooling platform is even TSA-friendly. The Cool Channel lap desk's width allows for the laptop to store inside of it for extra protection, and then it will fit inside most notebook bags and backpacks. Mesh Fabric Exterior, Proprietary Hard Core Plastic.