Huphantos describes the seamless tunic as made by weaving continuously from the top.

The attested use describes a tunic as continuously made by weaving from the top, without seams.

1. Continuously made by weaving · dominant

   In John 19:23, the nominative singular masculine form describes the tunic in the clause that follows its division from the other garments; the APB renders the garment as “seamless, woven from the top throughout.”

   John 19:23

In the Anselm Project Bible: In John 19:23, the APB presents the tunic as “seamless, woven from the top throughout.” That wording reflects the clause as a whole.