||It shall have an opening for the head in the middle, and this opening shall have a woven border all around it, like there is around the head opening of a coat of mail. [The neck] shall thus not be left open.
Vehayah fi-rosho betocho safah yihyeh lefiv saviv ma'aseh oreg kefi tachra yihyeh-lo lo yikarea.
|not be left open|
(Rashbam; Chizzkuni). Or, 'so that it not be torn' (Rashi). Or, 'Do not tear it,' implying a negative commandment (Yoma 72a; Yad, Kley HaMikdash 9:3).