Exodus 39:23
with an opening in the center of the robe like that of a garment, with a collar around the opening so that it would not tear.
Berean Standard Bible
And there was an hole in the midst of the robe, as the hole of an habergeon, with a band round about the hole, that it should not rend.
The opening of the robe in the middle of it was like the opening of a coat of mail, with a binding around its opening, that it should not be torn.