While on the go, use the DefenderShield® Cell Phone EMF Protection & Anti-Radiation Pouch to stay protected from Electromagnetic Field (EMF) radiation while keeping your cell phone or other device secure and accessible. The DefenderShield EMF Blocking Cell Phone Pouch uses DefenderShield’s newly developed Ultra Armor® Shielding Technology in the back, to help protect your body from wireless EMF emitting from your device. It should not affect cellular service or connectivity. Perfect for: daily use with most smartphones, carrying essential items on-the-go, strapping to belt or bags, traveling, hands-free use (when using strap). All Features. Ultra Armor® Shielding Technology blocks up to 99% of wireless Radio Frequency (RF) EMF radiation & the entire 5th Generation spectrum (300 Hz-90 GHz). High quality and durable neoprene fabric. Pen loop and additional front pocket to hold small items such as credit cards or ID. VELCRO® loop on back to attach to a belt or bag.