Designed to fit standard caps which have size adjustment at the back,
for small – medium head sizes.
Cut out fits at the back with the TFC tag/pocket hidden inside the cap
(Silver side visible).
More Info EMF/Scaler Energy
Metal fiber exposed to air/moisture cannot avoid oxidation,
therefore the fabric can show signs of dis-coloring (Patina)
this is normal but it does not affect the Radiation Shielding function