Gracie and Roo Original designer Travel & Tech Beanie. Blocks majority of artificial airwaves to avoid electromagnetic frequencies, electro smog from 5G, wi-Fi, Bluetooth, artificial airwaves radiation. Where while using technology m, flying an airplane, traveling in car, in traffic, also useful for sleeping for better sleep, use for meditation for better focus. Great for gamers and students for study when using the computer. Soft touch silver lining with antimicrobial benefits and comfortable for sleep. G&R customers are experiencing relief from headaches, insomnia, nightmares & increased sense of health & well-being. G&R Silver or G&R Pink available.