This cap is created from specialized materials designed to protect the brain from absorbing this harmful radiation and is custom-sewn to prevent any gaps which the EMR may slip through. This ensures that your head is completely shielded; even the brim is made from these radiation-blocking materials! The fabric is fully enclosed and has no metal features.To top it all off, the hat sports a very fashionable design and looks like a typical combat cap. This allows you to wear it at home, work, out in public, or anywhere else you may go. The cap is also 100% made in Canada.