'Mail' in the Bible

There shall be an opening at its top in the middle of it; around its opening there shall be a binding of woven work, like the opening of a coat of mail, so that it will not be torn.

and the opening of the robe was at the top in the center, as the opening of a coat of mail, with a binding all around its opening, so that it would not be torn.

“Who can strip off his outer armor?Who can come within his double mail?