Our EMF shielding fabric consists of a special copper weave that shields high-frequency electromagnetic fields (EMF) and radio-frequency radiation (RF). The fabric reflects and absorbs the radiation and forms a barrier between the source and the user. It effectively shields a broad frequency range, which also covers the frequencies used by mobile networks (5G/4G), Wi-Fi, Bluetooth and other wireless technologies. The shielding effectiveness is measured in decibels (dB) and is stated on our product.