Key FeaturesMaterial: Made from durable tempered borosilicate glass, which is resistant to thermal shock.Versatility: These containers are generally safe for use in the microwave, refrigerator, and freezer.Design: Features a clear body for easy content identification and a tight-fitting teal or "lagoon" colored lid.Sizes: Common capacities for this round set include 420ml (42cl), 670ml (67cl), and 920ml (92cl