John Gill Commentary Exodus 31:10

"and the finely wrought garments, and the holy garments for Aaron the priest, and the garments of his sons, to minister in the priest`s office," — Exodus 31:10 (ASV)

And the clothes of service
Either those the priests ministered in in the time of service, and which they never wore but when in it, and so might with propriety be so called, and what they were the following words explain; or else these were clothes of blue, purple, and scarlet, and coverings of badgers' skins, in which the ark, the shewbread table, the candlestick, and the golden altar, and other instruments of the tabernacle were wrapped, as Aben Ezra observes, when the Israelites journeyed in the wilderness, see (Numbers 4:5–15)

and the holy garments for Aaron the priest ;
the breastplate, ephod, and robe, the broidered coat, mitre, and girdle, (Exodus 28:4)

and the garments of his sons to minister in the priest's office ;
the bonnets, coats, girdles, and breeches, (Exodus 28:40–42) .