'Coat' in the Bible

If you take your neighbor's coat as collateral, you are to return it to him by sunset,

There is to be an opening at its top, in the middle, with a woven binding around the opening like the opening of a coat of mail so that it cannot be torn.

The opening of the robe was in the middle, like the opening of a coat of mail, with a binding around the opening so it would not be torn.