Exodus 28:32

28:32 There is to be an opening in its top in the center of it, with an edge all around the opening, the work of a weaver, like the opening of a collar, so that it cannot be torn.

Exodus 39:23

39:23 There was an opening in the center of the robe, like the opening of a collar, with an edge all around the opening so that it could not be torn.