Shield Apparels Signal Proof Fashion Snapback Cap
Signal Proof Fashion Snapback cap is a must have cap for enthusiastic persons who loves to perform outdoor activities these signal proof caps blocks all low and high frequencies caused by 5G spectrum while keeping your comfort at its best comes with one size that fits all adults.
Outer Surface : 100% Acrylic.
Inner Surface : 90% Silver & 10% Spandex.
Shielding silver fabric technical details:
Attenuation: 10MHz~6GHz 40~80dB.
Surface conductivity: <10ohm/inch.
Shielding effectivity: 99%.