Their bodies, initially smooth, were then decorated with rings which had both a decorative and a structural function, while the mouth was removed and replaced by a jutting edge and an opening placed in the lower part of the jar, where it was possible to insert a spigot to draw the liquids.
I corpi, dapprima lisci, furono scanditi da cerchiature a fasce, con una funzione sia decorativa sia strutturale, mentre il versatoio fu eliminato a favore di un orlo estroflesso e di un’apertura a ugello, posta nella parte inferiore dell’orcio, entro la quale poter inserire una cannella per la fuoriuscita del liquido.