Faraday Fabric: Combining advanced technology concepts it is an innovative product to deal with the modern electromagnetic interference problem and can skillfully build electromagnetic shielding space to protect your life and work. Superior Shielding Performance: With excellent RF EMI RFID radiation shielding ability it can efficiently block WiFi calls and other common wireless signals guarding the safety of electronic devices and personal privacy in all aspects. Reasonable Size: Measuring 43.31 inches long and 39.37 inches wide the large-area design can cover a wide range of items and spaces. Whether you want to wrap a single large electronic device or set up a large area in a specific area you can easily meet the needs. Selected Materials: Made of high-quality polyester material it is sturdy and durable and can withstand the wear and tear of daily use to ensure long-term stable shielding effect. Multi-purpose: Widely used in daily life. Wrapping it around your cell phone can prevent cell phone signals from being tracked and protect your privacy; placing it in your bedroom can block outside WiFi signals allowing you to enjoy an interference-free sleep environment.