וַעֲשֵׂ֤ה לָהֶם֙ מִכְנְסֵי־בָ֔ד לְכַסּ֖וֹת בְּשַׂ֣ר עֶרְוָ֑ה מִמָּתְנַ֥יִם וְעַד־יְרֵכַ֖יִם יִהְיֽוּ׃
And thou shalt make them linen breeches to cover the flesh of their nakedness; from the loins even unto the thighs they shall reach.
Targum Jonathan on Exodus
And thou shalt make for them under-garments of fine linen to cover the flesh of their shame; from the girt of the girdle of their loins unto their thighs they shall be.