It is. They come in vacuum sealed, tamper-proof like transparent plastic bags, you'd know 100% if it's been ripped apart or looks different from original, as it has some watermarked logos across and well, it's vacuum sealed, if you open it somehow in transit, recipient will be able to tell, unless scammer comes up with a replica and repacks. Visit their threat model section on site, click on Supply chain attacks in the table of contents. Further information on there!

Related: https://bitbox.swiss/bitbox02/security-features/