EMF Protection Reduce High Frequency Radiation with our Swiss Naturell Fabric, Keep Neighbourhood Wi-Fi Signals At Bay 15 Feet x 8.20 Feet Attenuation: 35 dB at 1 GHz Length: 15 feet; Width: ~8.2ft (~250cm) Dimension stability: +/- 3 % Certificates: ko-Tex 100 and 1000 Machine washable, easy to iron and process