FRID shielding material can isolate signals The raw material of the blanket liner is made of silver fiber, which effectively shields radiation. Height reduction – damping 10 MHz 3 GHz 30-60 db It is very suitable for blocking radiation from intelligent instruments and other EMF sources. Multiple uses: When you put your computer or iPad on your lap, you can curl down on the sofa, not only for pregnancy, but also when you use your device after your baby arrives. Used as a game mat, baby blanket, and even as a parcel. Durable, easy to clean, and suitable for all aspects of life.