Cell Tower Radiation/WiFi Protective Netting (3.28ft x 5ft wide) HIGH protection - Attenuation: 10MHz - 3GHz 35-60dB Perfect for shielding windows and walls, great for lining hats and clothing or draped over the bed Fantastic wifi blocker if you are surrounded by networks Can be sewn and washed on low heat Will also block digital TV, DECT, Wi-Max, 3G, 4G and other wireless applications