EMF Radiation Protection Maternity Clothes, Dresses Radiation Shield 8900760 30% metal (non-lead metal) fiber, 55% cotton, 15% polyester Fabric: 30% metal (non-lead metal) fiber, 55% cotton, 15% polyester. Comfortable and safe on skin. The fabric provides 35dB RF radiation attenuation from 10M Hz to 3GHz and beyond Wear this dress top to reduce the risks of everyday radiation for your unborn child, it blocks excess RF radiation but not for fully blocking cell phone signals purpose Maternity sizes: 45.6 inches (116 cm) at chest; 52 inches (132 cm) at belley, 53.5 inches (136 cm) at hem and 30 inches (76 cm) long; Color: Purple. Care, hand wash, air dry, do not bleach, do not dry clean. Be certain its authentic OurSure Brand