This is a set of 28 plastic cups (bowl-shaped). The plastic cups are heat-resistant and can be used with boiling water and in microwaves. They are convenient for use as simple bowl containers for food and as storage containers. The containers are all approximately the same size (see photos), but there are three types with slight differences in size and material as listed below. [Container Sizes] Total: 28 pieces 23 pieces: 15.3 cm (diameter) x 6 cm (height) 4 pieces: 16 cm (diameter) x 6.5 cm (height) 1 piece: 15.5 cm (diameter) x 7 cm (height) [Material] 23 pieces: BF (foamed polystyrene with polypropylene) 5 pieces: Plastic Container color: White [Before bidding] These items have been thoroughly cleaned and sanitized, so they can be used for food as is.