Check the listing for details. Radiation Free Laptop Tray: Protect Yourself From Computer & WiFi Radiation. Condition: New. Listed at 59.99 USD. The ProShield Laptop Tray is a specialized laptop radiation shield that reduces harmful EMF radiation emitted by your to almost NONE. As independent tests made by certified Laboratory's around the world has proved, ProShieldTM LapTopTray blocks both Extremely Low Frequency (ELF) as well as Radio Frequency (RF) Electromagnetic Radiation (EMR) emissions. It is the certainly The best radiation shield available today in non-military use. That means you can still use laptop, tablets, computers, and other electronic devices in your lap and remain healthy.Features:Shields all electromagnetic radiation (RF)Blocks all Low frequency radiation (ELF)Laptop stand and tray for placing laptop computers and tabletsHeat emission reduction by up to 99%Light weight and portable