I used the cups from store-bought pudding a few times to make jelly. They resemble vases sold for bulbs, so I'm listing them. I only used them for pudding. The jars have air bubbles, and the lids close properly, but they are plastic, so there's a bit of wear and tear? They're a bit whitish due to the material. (I didn't pay much attention, so I don't remember what they were like originally.) I'm offering these to those looking for this slender size.