The term ‘plastic vase’ is derived from the Greek word plasso, meaning to model, and is applied to sculptural vases or those that have modelled elements.
The askos (pl. askoi) contained expensive liquids, as indicated by the small size and two main features: its overarching handle or ring handle, and a narrow neck with wide mouth. Ring askoi are a subdivision of this category, and generally had deep bodies with a narrow central tube which ran vertically through the vessel. However, much rarer examples have a wider, doughnut-shaped body.