In my research, I’ve found SoloKeys may be a US company. They are headquartered in New Jersey and one Co-founder is in New York City. However, according to their WhoIs data, the domain was registered in Iceland.
From SoloKey’s Solo 2A+ NFC Security Key product page “Made and programmed in Europe.” https://solokeys.com/products/solo-2a-nfc-security-key?variant=40297992093889
The thing about Arsenal is, they always try to walk it in