Charles Ellicott Commentary Exodus 28:4

"And these are the garments which they shall make: a breastplate, and an ephod, and a robe, and a coat of checker work, a mitre, and a girdle: and they shall make holy garments for Aaron thy brother, and his sons, that he may minister unto me in the priest`s office." — Exodus 28:4 (ASV)

1. These are the garments. —The garments specific to the high priest are considered first and described with great detail in thirty-six verses (Exodus 28:4–39). The most prominent was the breastplate, described in Exodus 28:13-30, and mentioned first here. Next to this came the special vestment called the “ephod,” a type of short coat or vest, on which the breastplate was worn .

   Under the ephod was the long blue robe called “the robe of the ephod,” which may be considered the main garment and is described in Exodus 28:31-35. On his head, the high priest wore a “mitre” or turban ; and inside his “robe,” he wore a linen shirt or tunic, secured by a girdle (Exodus 28:39). Underneath the tunic, he wore linen breeches (Exodus 28:42–43). Nothing is said about any covering for his feet, but they were probably protected by sandals.