World Health Organization (WHO) Press Release on May 31, 2011: Cell phone use can increase possible cancer risk. This product is specially designed for reducing Radio Frequency (RF) radiation such as cell phone, wireless devices, microwave oven. Now you can give your child less RF radiation exposure right from the start. Metals are typical conductive materials used for RF shielding. OurSure products made with high-tech metal fiber or nano- silver fiber blend. Shielding effectiveness of OurSure textile products was tested by accredited institutes and verified to have up to 30-35 dB shielding effectiveness for 25%-35% metal blend fabrics, up to 56 dB shielding effectiveness for 50% silver blend and up to 70 dB shielding effectiveness for 100% silver blend in the frequency range from 10MHz to 3GHz and beyond. The higher dB value, the higher shielding effectiveness it gives. 100% silver blend fabric provides the best RF shielding effectiveness. You may click the hyperlink of ¡®OurSure¡¯ brand name above each product title for more garment selections. Please note that the cell phone test is a demonstration of effectiveness only. RF shielding result may vary by cellular network, geographic location and phone model. Even when a majority of radiation is shielded, the radiation levels may be high enough in some high-power cellular networks that a small fraction of signal will allow reception and register a signal on your phone. 100% Silver blend products are suggested for completel