Made with a soft Organic Bamboo/Cotton blend, the DefenderShield® Pregnancy EMF Protection & Anti-Radiation Belly Band incorporates stretchy advanced shielding to protect you and your unborn baby from up to 99% of wireless Electromagnetic Field (EMF) radiation and 5th Generation radiation up to 10 GHz emitted by both mobile devices and ambient EMF emissions in the environment. Perfect for: pregnant women who are more vulnerable to EMF radiation exposure. All Features: Advanced shielding in front and sides of EMF Protection Belly Band blocks up to 99% of wireless Radio Frequency (RF) EMF radiation (300 Hz-10 GHz). Made with soft and stretchy non-toxic organic bamboo/cotton blend fabric. 2 Sizes with built-in adjustable waistband to accommodate pre-pregnancy U.S. sizes 2-16. Elastic band along the bottom helps keep Belly Band secure. Wear under or over clothing - neutral color doesn't show through. The DefenderShield® EMF Radiation Protection Belly Band Shields: