Korean but can't verify

That the country of origin if outside the U.S.A. must be shown. That reg may've gone by the wayside.

Lotte Department Store brands integrated to 'Eliden'
Aug 27, 2017
“The five private brands operated by Lotte Department Store will be rebranded under the umbrella brand Eliden ...”
http://www.koreaherald.com/view.php?ud=20170827000112

Lotte Department Store is a Korean retail company established in 1979, and headquartered in Sogong-dong, Jung-gu, Seoul, South Korea.
https://en.wikipedia.org/wiki/Lotte_Department_Store

My reading of https://www.ftc.gov/tips-advice/business-center/guidance/complying-made-usa-standard#Other%20Statutes is the following.

If the hats were made outside the US, they'd have to be labeled "made in _________", naming the country in which they were essentially produced ("substantially transformed&quot .

If the hats were made of US-made cloth in the US, they'd have to be labeled "made in the USA". Meaning if the hats were labeled "Made in the USA" with foreign-produced textiles unable to be labeled neatly and cleanly.

That leaves a plausible gap--hats made in the US (last "substantial transformation&quot using textiles made outside the US (hence no required label under textile regulations).

Then again, that's just a deduction from one web page. But it's better than a claim that appears to be ungrounded in much of anything.

The brand, however, appears to be S. Korean (http://www.koreaherald.com/view.php?ud=20170827000112). But I can't find any evidence that it does much outside of E Asia (except for Moscow, oddly enough). It may not have trademarked its name in the US. Novartis apparently owned but abandoned that trademark in the US (https://www.trademarkia.com/eliden-78054018.html).