Protect your from up to 99% of harmful EMF / EMR radiation from devices like WiFi routers, baby monitors, cell phones, bluetooth & laptops in daily life.
Raw materials: Out Layer: Cotton, Inner Layer: All silver fiber
Cap circumference 61-68cm/24-26.8 inches, visor: 7cm/2.75 inches, cap depth: 18cm/7.08 inches
50% silver fiber-nylon fabric provides RF/microwave shielding performance with up to 85 dB shielding effectiveness from 10 MHz to 18 GHz and beyond
Care, hand wash, air dry, do not bleach
Package including: 1pc hat