שֵׁשׁ־בְּרִקְמָ֤ה מִמִּצְרַ֙יִם֙ הָיָ֣ה מִפְרָשֵׂ֔ךְ לִהְי֥וֹת לָ֖ךְ לְנֵ֑ס תְּכֵ֧לֶת וְאַרְגָּמָ֛ן מֵאִיֵּ֥י אֱלִישָׁ֖ה הָיָ֥ה מְכַסֵּֽךְ׃
Le lin d’Égypte, orné de broderies, formait ta voilure et te servait de pavillon, des étoffes d’azur et de pourpre des îles d’Elicha, te servaient de tenture.
Ibn Ezra
From a creature that was known in those days. As it is written, "and gave you sandals of tahash to wear (Ezek. 16:10)." Therefore, it was already known.
Rashbam
בגדי שש, the finest Egyptian garments made of superior linen. We know from Ezekiel 27,7 that such garments formed a well-known Egyptian export.