This is a set of round glass casserole dishes with lids.
The set typically includes three dishes of varying capacities, such as 1.0L, 1.5L, and 2.5L.
They are made from high-quality borosilicate glass, which is resistant to thermal shock and extreme temperatures (from -40°C to +350°C).
The dishes are oven, microwave, freezer, and dishwasher safe.
The lids can often double as separate serving dishes or baking dishes.