Description EMF HAT IDEAL FABRIC:100% Silver fibre liner.Outer layer:35% cotton 65% Polyester HIGH SHIELDING EFFICIENCY:Adult beanie EMF hat has advanced shielding blocks 99% of wireless EMF radiation (300Hz-10 GHz), 5 G, WiFi, Bluetooth. ONE SIZE FIT ALL:Hat circumference 57cm, depth 28cm，The EMF hat with elasticity,suitable for all head circumference,one size fit all. PERFECT FOR:Travel, Home, Office, Shopping, Outside and Daily Use.Its anti-EMF material dramatically reduces the exposure to dangerous wireless radiation while outdoors.
