It shall have two edges joined at the top on both sides, so that they may respond as one.
It shall have the two shoulderpieces thereof joined at the two edges thereof; and so it shall be joined together.
It shall have two shoulder straps to join the two [back and front] edges, that it may be held together.
It shall have two shoulder-pieces joined to the two ends thereof, that it may be joined together.
The vest will have two shoulder pieces attached to its two edges so that they may be joined together.