Set of 3 Princeware Containers http://www.tradus.com/princeware-microwave-safe-set-3-pcs-fresh-vent-round/p/KIWMPEUZFQMM4XGV Product Information : Set of 3 Princeware Containers Princeware Design Services include cutting edge- design of various industrial and domestic products. The design center runs as an independent profit center and caters to different industries. Containers with Capacities 5311 - 296 ml/1.2 Cups, 5312 - 525 ml/2.2 Cups, 5313 - 900 ml/3.8 Cups. Material: 100% Polypropylene. Features: - Safe for Microwave, - Allows air flow when using in Microwave, - Molded for easy handling, - Easy direction given, - Round with Vent mechanism on the lid, - Open the vent when using in the microwave, - Designed in such a way that the vent allows air-flow when using in the microwave, - Molded for easy handling, - Strong and durable, - Stack able, - Transparent for easy handling. Caution: Do not use rough scrubbers while washing, Use liquid soaps. Colors: Transparent with colored lids.