Create an ideal sleep environment, and keep your eyes protected from wireless EMF emissions while you rest with the DefenderShield® EMF Radiation Protection Sleep Eye Mask, which is capable of blocking up to 99% of wireless Electromagnetic Field (EMF) radiation & 5th Generation radiation (300Hz-10GHz) from reaching your retina, which is the closest neural pathway to the brain. Use the DefenderShield EMF Protection Sleep Mask with our EMF Radiation Protection Blanket and EMF Beanie for an amazing night's sleep! All Features: Advanced shielding helps block up to 99% of wireless Radio Frequency (RF) EMF radiation (300Hz-10GHz) from eyes. Comfortable memory foam molded eye piece with silver shielding fabric sewn behind. Soft microfiber and breathable mesh exterior. Zero eye pressure. Adjustable hook-and-loop closure in back with soft fabric exterior. Elastic straps along sides. Nose wing design provides 100% blackout from light.