1. SURFACE RESISTANCE: The surface resistance is less than 0.05 Ω, with shielding effectiveness ranging from 70 to 90 dB and a blocking rate. 2. SIZE: 39' x 44' inches (100 x 110 cm). Each piece is 44 inches wide and 39 inches long. If you more than one piece, please note that if consecutive lengths are required, it should be specified in the relevant section; otherwise, each piece will be in the 39 x 44 inch format. 3. VERSATILE USE: This signal shielding fabric can be used in many products, such as maternity wear, suits, curtains, blankets, bags, phone cases, or laptop and mainframe covers. It is also commonly used to make RFID blocking wallets, cardholders, outdoor waist bags, passport holders, etc. The shielding performance is when the item is fully enclosed. 4. BETTER PROTECTION FOR OUR SECURITY: Nowadays, technology evolves rapidly, and hacking techniques continue to advance. If we do not protect our electronic devices, our private data can be stolen without our knowledge, and our success can easily be compromised.