Exodus 39:28

39:28 and the turban of fine linen, the headbands of fine linen, and the undergarments of fine twisted linen.

Leviticus 8:9

8:9 Finally, he set the turban ¹  on his head and attached the gold plate, the holy diadem, ²  to the front of the turban just as the Lord had commanded Moses.

[8:9]  ¹ tn Although usually thought to be a “turban” (and so translated by the majority of English versions) this object might be only a “turban-like headband” wound around the forehead area (HALOT 624 s.v. מִצְנֶפֶת).

[8:9]  ² sn The gold plate was attached as a holy diadem to the front of the turban by means of a blue cord, and had written on it “Holy to the Lord” (Exod 28:36-37; 39:30-31). This was a particularly important article of high priestly clothing in that it served as the main emblem indicating Aaron’s acceptable representation of Israel before the Lord (Exod 28:38).