Exo 28:41 And thou shalt put them upon Aaron thy brother, and his sons with him; and shalt anoint them, and consecrate them, and sanctify them, that they may minister unto me in the priest's office.
Exo 28:42 And thou shalt make them linen
breeches to cover their nakedness; from the loins even unto the thighs they shall reach:
From Strong's...
H4370
מכנס
miknâs
mik-nawce'
From H3647 in the sense of hiding; (only in dual) drawers (from concealing the private parts): - breeches.
"Anyone who has ever studied archeological findings, has observed that men wore a form of breeches during work and at other times. The breeches were worn without a covering and they were worn with other garments over them. The purpose of these breeches was to hide the pudenda and secure modesty not otherwise protected in wearing the other loose fitting garments. It is true that men did not wear breeches all the time but, they nevertheless were specifically a man's garment. If they were a woman's garment, it would have been an ABOMINATION for a man to have worn them at anytime, and much more while acting as a Priest."
"They were not to rise any higher than the thighs. The area of the thigh extends to the knee. When the outer linen garment of the priest was cast over these breeches, the man's nakedness was covered to his ankles."
"We do not know when breeches were made to extend to the ankles. We do know that in doing this, the nakedness of man was the issue and equaled wearing the full length robe. Breeches were not designed by God for women. They could therefore, never replace the covering of their thighs and legs with pants, with their robes off."
"The breeches designed by God to be worn by men, qualified Aaron and his sons to Minister before the Lord. If they refused to wear them, they were adjudicated to bear iniquity...At the Lord's altar, with breeches on they were holy, with breeches off they were in iniquity."
The above taken from - God Drew The Line Against Women Preachers -
http://jesus-messiah.com/w-preach/wp-title.html