Emf Shielding Baseball Hat Size:L You don’t need to be

You don’t need to be an expert in order to take measurements with this EMF detector

and ELF magnetic field

the chlorine concentration in tap water is high

Inside layer: 42% Silver

Emf Shielding Baseball Hat Size:L You don’t need to bePerfect and complete emf protection for your head and your brain. Quality made in Canada. Over 90% emf shielding. Specifications: 47dB average attenuation (99. 999 % shielding) Internal fabric certified Oeko Test Class 100 and 1000 Raw materials: 89% Cotton, 8 % Copper, 2% silver, 1% Lycra 6% Panels, Sloped Front, Coolmax Elastic Sweatband Small: 7 1 8 (56. 8 cm) Medium: 7 1 4 (57. 7 cm) Large: 7 3 8 (58. 7 cm) X large: 7 1 2 (59. 6 cm) XX large 7 5 8