The soft magnetic sheet material "Flexield" is an electromagnetic shield material made of magnetic materials and resin. It suppresses noise radiated from electronic devices across a wide frequency range. Because it is a sheet-type product with excellent flexibility in fabrication, mounting it on mobile devices such as notebook PCs, digital cameras, and cellular phones is easy. “Flexield” is lighter than the ferrite sintered body, with excellent shock-resistant properties. Furthermore, it is effective when mounting metal onto a reader/writer or tag of a RFID system for 13.56MHz band.